diff --git a/server/MetasequoiaImeEngine b/server/MetasequoiaImeEngine
index b028f8c6..acd6e600 160000
--- a/server/MetasequoiaImeEngine
+++ b/server/MetasequoiaImeEngine
@@ -1 +1 @@
-Subproject commit b028f8c6fc84f899a815b6c8bb046af826faa2eb
+Subproject commit acd6e600e8b23d39e30a0fbf57c07709fc527c60
diff --git a/server/src/ai/ai_assistant.cpp b/server/src/ai/ai_assistant.cpp
index 28990189..814d74d4 100644
--- a/server/src/ai/ai_assistant.cpp
+++ b/server/src/ai/ai_assistant.cpp
@@ -43,12 +43,7 @@ std::string Fetch(const AiAssistant::Request &request, uint64_t generation)
     if (!config.enabled || config.token.empty() || config.endpoint.empty() || config.model.empty() ||
         request.pinyin_segments.empty() || g_generation.load() != generation)
     {
-        OutputDebugStringA(fmt::format("[ai-assistant] request skipped: enabled={}, token_configured={}, "
-                                      "endpoint_configured={}, model_configured={}, segment_count={}, "
-                                      "generation_current={}\n",
-                                      config.enabled, !config.token.empty(), !config.endpoint.empty(),
-                                      !config.model.empty(), request.pinyin_segments.size(),
-                                      g_generation.load() == generation).c_str());
+        (void)0;
         return {};
     }
 
@@ -70,11 +65,7 @@ std::string Fetch(const AiAssistant::Request &request, uint64_t generation)
     }
 
     // Deliberately exclude API token and system prompt from logs.
-    OutputDebugStringA(fmt::format("[ai-assistant] sending request: generation={}, provider={}, endpoint={}, "
-                                  "model={}, pinyin={}, context={}, candidate_limit={}\n",
-                                  generation, config.provider, config.endpoint, config.model,
-                                  nlohmann::json(request.pinyin_segments).dump(),
-                                  nlohmann::json(request.context).dump(), config.candidate_limit).c_str());
+    (void)0;
 
     CURL *curl = curl_easy_init();
     if (!curl) return {};
@@ -98,18 +89,15 @@ std::string Fetch(const AiAssistant::Request &request, uint64_t generation)
     curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &status);
     curl_slist_free_all(headers);
     curl_easy_cleanup(curl);
-    OutputDebugStringA(fmt::format("[ai-assistant] response: generation={}, curl_code={}, http_status={}, body={}\n",
-                                  generation, static_cast<int>(result), status, response).c_str());
+    (void)0;
     if (result != CURLE_OK || status < 200 || status >= 300)
     {
-        OutputDebugStringA(fmt::format("[ai-assistant] request failed: generation={}, curl_error={}, "
-                                      "http_status={}\n", generation, curl_easy_strerror(result), status).c_str());
+        (void)0;
         return {};
     }
     if (g_generation.load() != generation)
     {
-        OutputDebugStringA(fmt::format("[ai-assistant] response discarded as stale: response_generation={}, "
-                                      "current_generation={}\n", generation, g_generation.load()).c_str());
+        (void)0;
         return {};
     }
 
@@ -121,19 +109,16 @@ std::string Fetch(const AiAssistant::Request &request, uint64_t generation)
         const auto &candidates = result_json.at("candidates");
         if (!candidates.is_array() || candidates.empty())
         {
-            OutputDebugStringA(fmt::format("[ai-assistant] parsed an empty candidate list: generation={}\n",
-                                          generation).c_str());
+            (void)0;
             return {};
         }
         const std::string candidate = candidates.at(0).value("text", std::string{});
-        OutputDebugStringA(fmt::format("[ai-assistant] parsed best candidate: generation={}, candidate={}\n",
-                                      generation, candidate).c_str());
+        (void)0;
         return candidate;
     }
     catch (const std::exception &error)
     {
-        OutputDebugStringA(fmt::format("[ai-assistant] response parse failed: generation={}, error={}\n",
-                                      generation, error.what()).c_str());
+        (void)0;
         return {};
     }
 }
@@ -154,9 +139,7 @@ void WorkerLoop()
             const std::string candidate = cached->second;
             const uint64_t cached_generation = observed;
             lock.unlock();
-            OutputDebugStringA(fmt::format("[ai-assistant] cache hit: generation={}, pinyin={}, candidate={}\n",
-                                          cached_generation,
-                                          nlohmann::json(request.pinyin_segments).dump(), candidate).c_str());
+            (void)0;
             if (g_running && g_generation.load() == cached_generation && g_callback)
                 g_callback(candidate, request.identity, cached_generation);
             continue;
@@ -178,9 +161,7 @@ void WorkerLoop()
                 std::lock_guard cache_lock(g_mutex);
                 g_candidate_cache[BuildCacheKey(request)] = candidate;
             }
-            OutputDebugStringA(fmt::format("[ai-assistant] cache stored: generation={}, pinyin={}, candidate={}\n",
-                                          observed, nlohmann::json(request.pinyin_segments).dump(),
-                                          candidate).c_str());
+            (void)0;
             g_callback(candidate, request.identity, observed);
         }
     }
@@ -209,9 +190,7 @@ void Stop()
 void OnInputChanged(Request request)
 {
     { std::lock_guard lock(g_mutex); g_latest = std::move(request); g_last_input = std::chrono::steady_clock::now(); ++g_generation;
-      OutputDebugStringA(fmt::format("[ai-assistant] input updated: generation={}, identity={}, segment_count={}\n",
-                                    g_generation.load(), g_latest.identity,
-                                    g_latest.pinyin_segments.size()).c_str()); }
+      (void)0; }
     g_cv.notify_one();
 }
 void Clear() { OnInputChanged({}); }
diff --git a/server/src/cloud/cloud_ime.cpp b/server/src/cloud/cloud_ime.cpp
index 33834c6d..4e9c6fb7 100644
--- a/server/src/cloud/cloud_ime.cpp
+++ b/server/src/cloud/cloud_ime.cpp
@@ -161,16 +161,16 @@ std::string FetchCloudCandidate(const std::string &pinyin, uint64_t generation)
     std::string response;
     if (!HttpGet(L"inputtools.google.com", path, response))
     {
-        OutputDebugString(fmt::format(L"[msime]: 请求云输入法失败").c_str());
+        (void)0;
         return "";
     }
 
     if (!g_running || g_generation.load() != generation)
         return "";
 
-    // OutputDebugString(fmt::format(L"[msime]: cloud response: {}", string_to_wstring(response)).c_str());
+    // (void)0;
     std::string candidate = ParseCandidate(response);
-    // OutputDebugString(fmt::format(L"[msime]: cloud candidate: {}", string_to_wstring(candidate)).c_str());
+    // (void)0;
     return candidate;
 }
 
diff --git a/server/src/config/ime_config.cpp b/server/src/config/ime_config.cpp
index 9590d061..322a98d2 100644
--- a/server/src/config/ime_config.cpp
+++ b/server/src/config/ime_config.cpp
@@ -340,7 +340,7 @@ bool LoadImeConfig()
     catch (const toml::parse_error &)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: TOML parse error\n");
+        (void)0;
 #endif
         return false;
     }
@@ -420,7 +420,7 @@ void MigrateLegacyVoiceInputConfig()
     catch (const toml::parse_error &)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Legacy voice input config migration skipped: TOML parse error\n");
+        (void)0;
 #endif
     }
 }
@@ -451,17 +451,16 @@ void InitImeConfig()
     {
         MigrateLegacyVoiceInputConfig();
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: session_backend = {}", string_to_wstring(g_session_backend)).c_str());
+        (void)0;
 #endif
 #ifdef FANY_DEBUG
-        OutputDebugString(
-            fmt::format(L"[msime]: shuangpin_preedit_mode = {}", string_to_wstring(g_shuangpin_preedit_mode)).c_str());
+        (void)0;
 #endif
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: shuangpin_helpcode = {}", g_shuangpin_helpcode_enabled).c_str());
+        (void)0;
 #endif
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: quanpin_helpcode = {}", g_quanpin_helpcode_enabled).c_str());
+        (void)0;
 #endif
     }
 }
diff --git a/server/src/ipc/event_listener.cpp b/server/src/ipc/event_listener.cpp
index f1252e6a..545fefd2 100644
--- a/server/src/ipc/event_listener.cpp
+++ b/server/src/ipc/event_listener.cpp
@@ -37,15 +37,9 @@
 #include "unicode/unicode_query.h"
 #include <cwchar>
 
-#ifdef FANY_IPC_DEBUG
-#define FANY_IPC_LOG_RAW(message) OutputDebugString(message)
-#define FANY_IPC_LOGW(message) OutputDebugString((message).c_str())
-#define FANY_IPC_LOGF(...) OutputDebugString(fmt::format(__VA_ARGS__).c_str())
-#else
 #define FANY_IPC_LOG_RAW(message) ((void)0)
 #define FANY_IPC_LOGW(message) ((void)0)
 #define FANY_IPC_LOGF(...) ((void)0)
-#endif
 
 namespace
 {
@@ -223,11 +217,7 @@ void UpdateAiInput(const std::string &identity, uint64_t client_id = 0, uint64_t
     const AiAssistantConfig config = GetConfiguredAiAssistant();
     const bool usable = config.enabled && g_inputSession && g_inputSession->current_scheme_type() != SchemeType::Wubi &&
                         g_inputSession->is_all_complete_pure_pinyin() && !identity.empty();
-    OutputDebugStringA(fmt::format("[ai-assistant] trigger check: enabled={}, scheme={}, complete={}, "
-                                  "identity={}, usable={}\n", config.enabled,
-                                  g_inputSession ? static_cast<int>(g_inputSession->current_scheme_type()) : -1,
-                                  g_inputSession && g_inputSession->is_all_complete_pure_pinyin(), identity,
-                                  usable).c_str());
+    (void)0;
     AiAssistant::Request request;
     if (usable)
     {
@@ -1295,7 +1285,7 @@ void EventListenerLoopThread()
     while (pipe_running)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Main pipe starts to wait");
+        (void)0;
 #endif
         if (!listeningPipe || listeningPipe == INVALID_HANDLE_VALUE)
         {
@@ -1567,7 +1557,7 @@ void ToTsfPipeEventListenerLoopThread()
     while (pipe_running)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: ToTsf Pipe starts to wait");
+        (void)0;
 #endif
         if (!listeningPipe || listeningPipe == INVALID_HANDLE_VALUE)
         {
@@ -1582,7 +1572,7 @@ void ToTsfPipeEventListenerLoopThread()
 
         BOOL connected = WaitForPipeClient(listeningPipe);
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: ToTsf Pipe connected: {}", connected).c_str());
+        (void)0;
 #endif
         LogPipeConnectResult(L"to-tsf-pipe", connected);
         if (connected)
@@ -1636,7 +1626,7 @@ void ToTsfWorkerThreadPipeEventListenerLoopThread()
     while (pipe_running)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: ToTsf Worker Thread Pipe starts to wait");
+        (void)0;
 #endif
         if (!listeningPipe || listeningPipe == INVALID_HANDLE_VALUE)
         {
@@ -1655,7 +1645,7 @@ void ToTsfWorkerThreadPipeEventListenerLoopThread()
         if (connected)
         {
 #ifdef FANY_DEBUG
-            OutputDebugString(fmt::format(L"[msime]: ToTsf Worker Thread Pipe connected: {}", connected).c_str());
+            (void)0;
 #endif
             if (!pipe_running)
             {
@@ -1965,12 +1955,7 @@ void ApplyAiCandidate(const std::string &candidate, const std::string &identity,
     if (!enabled || candidate.empty() || !has_session || wubi || !complete ||
         GlobalIme::composition.creating_word.active || current_identity != identity)
     {
-        OutputDebugStringA(fmt::format("[ai-assistant] candidate rejected: generation={}, enabled={}, "
-                                      "candidate_empty={}, has_session={}, wubi={}, complete={}, creating_word={}, "
-                                      "requested_identity={}, current_identity={}\n", generation, enabled,
-                                      candidate.empty(), has_session, wubi, complete,
-                                      GlobalIme::composition.creating_word.active, identity,
-                                      current_identity).c_str());
+        (void)0;
         return;
     }
     auto &items = Global::candidate_ui.items;
@@ -1980,8 +1965,7 @@ void ApplyAiCandidate(const std::string &candidate, const std::string &identity,
     if (std::any_of(items.begin(), items.end(), [&](const WordItem &item) { return item.word == candidate; }))
     {
         Global::ai_candidate = {true, candidate, query.committed_pinyin};
-        OutputDebugStringA(fmt::format("[ai-assistant] candidate skipped as duplicate: generation={}, candidate={}\n",
-                                      generation, candidate).c_str());
+        (void)0;
         return;
     }
 
@@ -1992,8 +1976,7 @@ void ApplyAiCandidate(const std::string &candidate, const std::string &identity,
     const size_t insert_index = std::min<size_t>(2, items.size());
     items.insert(items.begin() + insert_index, WordItem(identity, candidate, 1, CandidateSource::AiSuggestion));
     g_inputSession->cache_dynamic_candidate(query.cache_key, candidate, CandidateSource::AiSuggestion);
-    OutputDebugStringA(fmt::format("[ai-assistant] candidate inserted: generation={}, index={}, candidate={}, "
-                                  "identity={}\n", generation, insert_index + 1, candidate, identity).c_str());
+    (void)0;
     Global::ai_candidate = {true, candidate, query.committed_pinyin};
     Global::candidate_ui.item_total_count = static_cast<int>(items.size());
     Global::candidate_ui.page_index = 0;
@@ -2436,10 +2419,7 @@ void ProcessSelectionKey(UINT keycode, uint64_t client_id, uint64_t activation_e
             if (creating_word_progress.completed)
             { /* 最终的造词 */
 #ifdef FANY_DEBUG
-                OutputDebugString(fmt::format(L"[msime]: create_word 造词：{} {}",
-                                              string_to_wstring(GlobalIme::composition.creating_word.word),
-                                              string_to_wstring(GlobalIme::composition.creating_word.pinyin))
-                                      .c_str());
+                (void)0;
 #endif
 
                 /* 更新一下被选中的候选项 */
diff --git a/server/src/ipc/ipc.cpp b/server/src/ipc/ipc.cpp
index 56ee5a24..0a335926 100644
--- a/server/src/ipc/ipc.cpp
+++ b/server/src/ipc/ipc.cpp
@@ -24,13 +24,8 @@
 #include "utils/common_utils.h"
 #include "fmt/xchar.h"
 
-#ifdef FANY_IPC_DEBUG
-#define FANY_IPC_LOG_RAW(message) OutputDebugString(message)
-#define FANY_IPC_LOGF(...) OutputDebugString(fmt::format(__VA_ARGS__).c_str())
-#else
 #define FANY_IPC_LOG_RAW(message) ((void)0)
 #define FANY_IPC_LOGF(...) ((void)0)
-#endif
 
 #define LOW_INTEGRITY_SDDL_SACL                                                                                        \
     SDDL_SACL                                                                                                          \
@@ -367,7 +362,7 @@ int InitIpc()
     if (!hMapFile || !pBuf)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Shared-memory IPC unavailable: {}", GetLastError()).c_str());
+        (void)0;
 #endif
         canUseSharedMemory = false;
         pBuf = nullptr;
@@ -405,7 +400,7 @@ int InitIpc()
         {
 // Error handling
 #ifdef FANY_DEBUG
-            OutputDebugString(fmt::format(L"[msime]: Failed to create event: {}", FANY_IME_EVENT_ARRAY[i]).c_str());
+            (void)0;
 #endif
         }
     }
@@ -463,14 +458,14 @@ int InitNamedPipe()
     if (hPipe == INVALID_HANDLE_VALUE)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: CreateNamedPipe failed: {}", GetLastError()).c_str());
+        (void)0;
 #endif
         FANY_IPC_LOGF(L"[msime]: [ipc] CreateNamedPipe failed for main pipe: gle={}", GetLastError());
     }
     else
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Named pipe created successfully");
+        (void)0;
 #endif
         FANY_IPC_LOG_RAW(L"[msime]: [ipc] Main named pipe created");
     }
@@ -478,14 +473,14 @@ int InitNamedPipe()
     if (hAuxPipe == INVALID_HANDLE_VALUE)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: CreateNamedPipe aux pipe failed: {}", GetLastError()).c_str());
+        (void)0;
 #endif
         FANY_IPC_LOGF(L"[msime]: [ipc] CreateNamedPipe failed for aux pipe: gle={}", GetLastError());
     }
     else
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Named pipe aux pipe created successfully");
+        (void)0;
 #endif
         FANY_IPC_LOG_RAW(L"[msime]: [ipc] Aux named pipe created");
     }
@@ -493,14 +488,14 @@ int InitNamedPipe()
     if (hToTsfPipe == INVALID_HANDLE_VALUE)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: CreateNamedPipe to tsf pipe failed: {}", GetLastError()).c_str());
+        (void)0;
 #endif
         FANY_IPC_LOGF(L"[msime]: [ipc] CreateNamedPipe failed for to-tsf pipe: gle={}", GetLastError());
     }
     else
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Named pipe to tsf pipe created successfully");
+        (void)0;
 #endif
         FANY_IPC_LOG_RAW(L"[msime]: [ipc] To-tsf named pipe created");
     }
@@ -508,14 +503,14 @@ int InitNamedPipe()
     if (hToTsfWorkerThreadPipe == INVALID_HANDLE_VALUE)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"CreateNamedPipe to tsf worker thread pipe failed: {}", GetLastError()).c_str());
+        (void)0;
 #endif
         FANY_IPC_LOGF(L"[msime]: [ipc] CreateNamedPipe failed for to-tsf-worker pipe: gle={}", GetLastError());
     }
     else
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Named pipe to tsf worker thread pipe created successfully");
+        (void)0;
 #endif
         FANY_IPC_LOG_RAW(L"[msime]: [ipc] To-tsf-worker named pipe created");
     }
@@ -535,7 +530,7 @@ int InitNamedPipe()
         {
 // Error handling
 #ifdef FANY_DEBUG
-            OutputDebugString(fmt::format(L"[msime]: Create Event To TSF failed: {}", GetLastError()).c_str());
+            (void)0;
 #endif
         }
     }
@@ -552,8 +547,7 @@ int InitNamedPipe()
         {
 // Error handling
 #ifdef FANY_DEBUG
-            OutputDebugString(
-                fmt::format(L"[msime]: Create Event To TSF Worker Thread failed: {}", GetLastError()).c_str());
+            (void)0;
 #endif
         }
     }
@@ -1350,7 +1344,7 @@ bool SendToTsfClientViaNamedpipe(uint64_t client_id, uint64_t activation_epoch,
     if (!endpoint)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: SendToTsfViaNamedpipe Pipe disconnected");
+        (void)0;
 #endif
         LogPipeDisconnected(L"to-tsf", msg_type);
         return false;
@@ -1358,9 +1352,7 @@ bool SendToTsfClientViaNamedpipe(uint64_t client_id, uint64_t activation_epoch,
     if (!write_succeeded)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: SendToTsfViaNamedpipe: WriteFile failed, gle={}, written={}",
-                                      write_error, bytes_written)
-                              .c_str());
+        (void)0;
 #endif
         LogPipeWriteFailure(L"to-tsf", msg_type, write_error, bytes_written, sizeof(packet));
         if (failed_endpoint_removed)
@@ -1430,7 +1422,7 @@ bool SendWorkerPacket(uint64_t client_id, uint64_t activation_epoch, bool requir
     if (!endpoint)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: SendToTsfWorkerThreadViaNamedpipe Pipe disconnected");
+        (void)0;
 #endif
         LogPipeDisconnected(L"to-tsf-worker", msg_type);
         return false;
@@ -1438,10 +1430,7 @@ bool SendWorkerPacket(uint64_t client_id, uint64_t activation_epoch, bool requir
     if (!write_succeeded)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(
-            fmt::format(L"[msime]: SendToTsfWorkerThreadViaNamedpipe: WriteFile failed, gle={}, written={}",
-                        write_error, bytes_written)
-                .c_str());
+        (void)0;
 #endif
         LogPipeWriteFailure(L"to-tsf-worker", msg_type, write_error, bytes_written, sizeof(packet));
         if (failed_endpoint_removed)
diff --git a/server/src/log/fanylog.cpp b/server/src/log/fanylog.cpp
index 41088c71..6ac05517 100644
--- a/server/src/log/fanylog.cpp
+++ b/server/src/log/fanylog.cpp
@@ -1,12 +1,6 @@
 #include "fanylog.h"
-#include "spdlog/spdlog.h"
 
 int InitializeSpdLog()
 {
-    spdlog::set_default_logger(::logger);
-    spdlog::flush_on(spdlog::level::info);
-#ifdef FANY_DEBUG
-    spdlog::info("FanyLog initialized.");
-#endif
     return 0;
 }
diff --git a/server/src/log/fanylog.h b/server/src/log/fanylog.h
index 129839f7..0f4d3002 100644
--- a/server/src/log/fanylog.h
+++ b/server/src/log/fanylog.h
@@ -1,17 +1,3 @@
 #pragma once
 
-#include "spdlog/spdlog.h"
-#include <spdlog/sinks/basic_file_sink.h>
-#include <string>
-#include <fmt/format.h>
-#include "utils/common_utils.h"
-#include "global/globals.h"
-
-inline std::string LogFilePath = fmt::format(         //
-    "C:/Users/{}/AppData/Local/metasequoiaime/log/{}.log", //
-    CommonUtils::get_username(),                      //
-    wstring_to_string(GlobalIme::ServerName)          //
-);
-inline auto logger = spdlog::basic_logger_mt("file_logger", ::LogFilePath);
-
-int InitializeSpdLog();
\ No newline at end of file
+int InitializeSpdLog();
diff --git a/server/src/main.cpp b/server/src/main.cpp
index 0b4df766..273e9345 100644
--- a/server/src/main.cpp
+++ b/server/src/main.cpp
@@ -67,13 +67,12 @@ int CALLBACK WinMain(_In_ HINSTANCE hInstance, _In_ HINSTANCE hPrevInstance, _In
     CommonUtils::SingleInstanceGuard single_instance(L"Local\\MetasequoiaImeServer_SingleInstance");
     if (!single_instance.is_valid())
     {
-        OutputDebugString(fmt::format(L"[msime]: Failed to create single instance mutex.").c_str());
+        (void)0;
         return 0;
     }
     if (single_instance.already_running())
     {
-        OutputDebugString(
-            fmt::format(L"[msime]: Single instance already exists, MetasequoiaImeServer is already running.").c_str());
+        (void)0;
         return 0;
     }
 
@@ -84,10 +83,7 @@ int CALLBACK WinMain(_In_ HINSTANCE hInstance, _In_ HINSTANCE hPrevInstance, _In
     const HRESULT comResult = CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
     if (FAILED(comResult))
     {
-        OutputDebugString(
-            fmt::format(L"[msime]: Failed to initialize the UI COM STA: 0x{:08X}",
-                        static_cast<unsigned long>(comResult))
-                .c_str());
+        (void)0;
         return 1;
     }
 
@@ -110,9 +106,9 @@ int CALLBACK WinMain(_In_ HINSTANCE hInstance, _In_ HINSTANCE hPrevInstance, _In
         "Input session backend configured={}, effective={}, scheme={}",
         configured_backend.empty() ? "legacy" : configured_backend, effective_backend,
         SchemeTypeToString(g_inputSession->current_scheme_type()));
-    spdlog::info(session_summary);
+    (void)0;
 #ifdef FANY_DEBUG
-    OutputDebugString(fmt::format(L"[msime]: {}", string_to_wstring(session_summary)).c_str());
+    (void)0;
 #endif
 
     RegisterCandidateWindowMessage();
diff --git a/server/src/sciter/candidate_window_sciter.cpp b/server/src/sciter/candidate_window_sciter.cpp
index 57723538..7b65bb2f 100644
--- a/server/src/sciter/candidate_window_sciter.cpp
+++ b/server/src/sciter/candidate_window_sciter.cpp
@@ -57,7 +57,7 @@ int PrepareCandidateWindowSciterHtml()
     std::wstring bodyPath = bodyHtml;
     ::BodyString = ReadHtmlFile(bodyPath);
 #ifdef FANY_DEBUG
-    OutputDebugString(fmt::format(L"[msime]: bodyPath = {}", bodyPath).c_str());
+    (void)0;
 #endif
 
     return 0;
@@ -179,7 +179,7 @@ void SciterBridgeJs::adjustInitialWindowSize(sciter::value width, sciter::value
         realHeight = height.get<int>();
     }
 #ifdef FANY_DEBUG
-    OutputDebugString(fmt::format(L"[msime]: Candidate Window size: {} {}", realWidth, realHeight).c_str());
+    (void)0;
 #endif
     // TODO: Adjust window size
     ::CANDIDATE_WINDOW_WIDTH = realWidth;
diff --git a/server/src/utils/webview_utils.cpp b/server/src/utils/webview_utils.cpp
index 8982645c..f35426d5 100644
--- a/server/src/utils/webview_utils.cpp
+++ b/server/src/utils/webview_utils.cpp
@@ -20,7 +20,7 @@ void MeasureDomUpdateTime(ComPtr<ICoreWebView2> webview)
 
     auto duration = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
     std::wstring message = L"DOM update time: " + std::to_wstring(duration.count()) + L" μs";
-    spdlog::info(wstring_to_string(message));
+    (void)0;
 }
 
 std::pair<double, double> ParseDivSize(const std::wstring &jsonResult)
@@ -45,8 +45,7 @@ std::pair<double, double> ParseDivSize(const std::wstring &jsonResult)
     }
     catch (const std::exception &e)
     {
-        OutputDebugStringW(fmt::format(L"[msime-webview] candidate DOM size parse failed: result='{}', error='{}'\n",
-                                      jsonResult, string_to_wstring(e.what())).c_str());
+        (void)0;
     }
     return size;
 }
@@ -55,7 +54,7 @@ void GetContainerSizeCand(ComPtr<ICoreWebView2> webview, std::function<void(std:
 {
     if (!webview)
     {
-        OutputDebugStringW(L"[msime-webview] candidate DOM measurement skipped: webview=null\n");
+        (void)0;
         callback({0.0, 0.0});
         return;
     }
@@ -81,21 +80,16 @@ void GetContainerSizeCand(ComPtr<ICoreWebView2> webview, std::function<void(std:
             if (SUCCEEDED(errorCode) && result)
             {
                 size = ParseDivSize(result);
-                OutputDebugStringW(fmt::format(L"[msime-webview] candidate DOM measurement completed: "
-                                              L"width={}, height={}, result='{}'\n",
-                                              size.first, size.second, result).c_str());
+                (void)0;
             }
             else
             {
-                OutputDebugStringW(fmt::format(L"[msime-webview] candidate DOM measurement failed: "
-                                              L"hr=0x{:08X}, result={}\n",
-                                              static_cast<unsigned long>(errorCode), result != nullptr).c_str());
+                (void)0;
             }
             callback(size);
             return S_OK;
         }).Get());
-    OutputDebugStringW(fmt::format(L"[msime-webview] candidate DOM measurement submitted: hr=0x{:08X}\n",
-                                  static_cast<unsigned long>(submitHr)).c_str());
+    (void)0;
 }
 
 void GetContainerSizeMenu(ComPtr<ICoreWebView2> webview, std::function<void(std::pair<double, double>)> callback)
@@ -115,8 +109,7 @@ void GetContainerSizeMenu(ComPtr<ICoreWebView2> webview, std::function<void(std:
             if (SUCCEEDED(errorCode) && result)
             {
                 size = ParseDivSize(result);
-                // OutputDebugString(fmt::format(L"[msime]: GetContainerSize: {} {}", size.first,
-                // size.second).c_str());
+                // (void)0;
             }
             else
             {
@@ -141,7 +134,7 @@ void MoveContainerBottom(ComPtr<ICoreWebView2> webview, int marginTop)
     script.append(L"px';");
     script.append(L"}");
 #ifdef FANY_DEBUG
-    OutputDebugString(fmt::format(L"[msime]: script: {}", script).c_str());
+    (void)0;
 #endif
     webview->ExecuteScript(script.c_str(), nullptr);
 }
diff --git a/server/src/webview2/windows_webview2.cpp b/server/src/webview2/windows_webview2.cpp
index 4fed7ece..9833f4f4 100644
--- a/server/src/webview2/windows_webview2.cpp
+++ b/server/src/webview2/windows_webview2.cpp
@@ -42,7 +42,7 @@ ComPtr<ICoreWebView2Environment> smallWindowWebviewEnvironment;
 
 void WebviewDebugLog(const std::wstring &message)
 {
-    OutputDebugStringW(fmt::format(L"[msime-webview] {}\n", message).c_str());
+    (void)0;
 }
 
 struct FloatingToolbarState
@@ -77,17 +77,12 @@ void ResetSmallWindowTopmostGate()
     floatingToolbarNavigationReady = false;
     smallWindowTopmostRequested = false;
     smallWindowTopmostApplied = false;
-    WebviewDebugLog(L"ready-gate reset");
+    (void)0;
 }
 
 void LogSmallWindowReadyGateUnlocked(const wchar_t *context)
 {
-    WebviewDebugLog(fmt::format(
-        L"ready-gate [{}]: cand_nav={}, menu_nav={}, ftb_nav={}, topmost_requested={}, topmost_applied={}, "
-        L"controllers={{cand:{},menu:{},ftb:{}}}",
-        context ? context : L"?", candidateNavigationReady, menuNavigationReady, floatingToolbarNavigationReady,
-        smallWindowTopmostRequested, smallWindowTopmostApplied, webviewControllerCandWnd != nullptr,
-        webviewControllerMenuWnd != nullptr, webviewControllerFtbWnd != nullptr));
+    (void)0;
 }
 
 void ApplyLazyTopmostUnlocked(const wchar_t *reason)
@@ -96,18 +91,14 @@ void ApplyLazyTopmostUnlocked(const wchar_t *reason)
     auto pinOne = [flag](HWND hwnd, const wchar_t *name) {
         if (!hwnd)
         {
-            WebviewDebugLog(fmt::format(L"lazy topmost skip {}: hwnd=null", name));
+            (void)0;
             return;
         }
         SetLastError(0);
         const BOOL ok = SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 0, 0, flag);
         RECT rect{};
         GetWindowRect(hwnd, &rect);
-        WebviewDebugLog(fmt::format(
-            L"lazy topmost {}: hwnd=0x{:X}, SetWindowPos={}, GetLastError={}, visible={}, "
-            L"rect=[{},{},{},{}]",
-            name, reinterpret_cast<uintptr_t>(hwnd), ok != FALSE, ok ? 0 : GetLastError(),
-            IsWindowVisible(hwnd) != FALSE, rect.left, rect.top, rect.right, rect.bottom));
+        (void)0;
     };
 
     smallWindowTopmostApplied = true;
@@ -116,8 +107,7 @@ void ApplyLazyTopmostUnlocked(const wchar_t *reason)
     // last so the idle toolbar stays discoverable above other small windows.
     const bool menu_visible =
         ::global_hwnd_menu != nullptr && IsWindowVisible(::global_hwnd_menu) != FALSE;
-    WebviewDebugLog(fmt::format(L"lazy topmost apply: reason={}, menu_visible={}",
-                                reason ? reason : L"?", menu_visible));
+    (void)0;
     pinOne(::global_hwnd, L"candidate");
     if (menu_visible)
     {
@@ -147,7 +137,7 @@ void TryApplyPendingLazyTopmost(const wchar_t *reason)
     ApplyLazyTopmostUnlocked(reason);
     if (::is_global_wnd_cand_shown && ::global_hwnd)
     {
-        WebviewDebugLog(L"lazy topmost follow-up: FineTuneWindow for pending candidate show");
+        (void)0;
         FineTuneWindow(::global_hwnd);
     }
     if (::global_hwnd_menu && IsWindowVisible(::global_hwnd_menu))
@@ -160,12 +150,12 @@ void TryApplyPendingLazyTopmost(const wchar_t *reason)
             webviewControllerMenuWnd->put_Bounds(bounds);
             webviewControllerMenuWnd->NotifyParentWindowPositionChanged();
         }
-        WebviewDebugLog(L"lazy topmost follow-up: refresh visible menu webview");
+        (void)0;
     }
     if (::global_hwnd_ftb && IsWindowVisible(::global_hwnd_ftb))
     {
         UpdateSmallWindowWebviewVisibility(::global_hwnd_ftb, true);
-        WebviewDebugLog(L"lazy topmost follow-up: refresh visible floating-toolbar webview");
+        (void)0;
     }
 }
 
@@ -173,11 +163,11 @@ void NotifySmallWindowNavigationReady(bool &readyFlag, const wchar_t *which)
 {
     if (readyFlag)
     {
-        WebviewDebugLog(fmt::format(L"small-window navigation ready ignored (duplicate): {}", which));
+        (void)0;
         return;
     }
     readyFlag = true;
-    WebviewDebugLog(fmt::format(L"small-window navigation ready: {}", which));
+    (void)0;
     LogSmallWindowReadyGateUnlocked(L"after-nav-ready");
     TryApplyPendingLazyTopmost(L"pending-after-nav-ready");
 }
@@ -271,8 +261,7 @@ bool EnsureSmallWindowsTopmost(const wchar_t *reason)
     }
     if (!AreSmallWindowWebviewsReadyUnlocked())
     {
-        WebviewDebugLog(fmt::format(L"lazy topmost deferred until webviews ready: reason={}",
-                                    reason ? reason : L"?"));
+        (void)0;
         LogSmallWindowReadyGateUnlocked(L"topmost-deferred");
         return false;
     }
@@ -293,10 +282,7 @@ void RaiseTrayMenuAboveSmallWindows(const wchar_t *reason)
     constexpr UINT flag = SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE;
     SetLastError(0);
     const BOOL ok = SetWindowPos(::global_hwnd_menu, HWND_TOPMOST, 0, 0, 0, 0, flag);
-    WebviewDebugLog(fmt::format(
-        L"raise tray menu above peers: reason={}, hwnd=0x{:X}, SetWindowPos={}, GetLastError={}, visible={}",
-        reason ? reason : L"?", reinterpret_cast<uintptr_t>(::global_hwnd_menu), ok != FALSE,
-        ok ? 0 : GetLastError(), IsWindowVisible(::global_hwnd_menu) != FALSE));
+    (void)0;
 }
 
 bool AreSmallWindowsTopmostApplied()
@@ -345,21 +331,18 @@ void UpdateSmallWindowWebviewVisibility(HWND hwnd, bool visible)
     }
     else
     {
-        WebviewDebugLog(fmt::format(L"visibility ignored: unknown hwnd=0x{:X}",
-                                    reinterpret_cast<uintptr_t>(hwnd)));
+        (void)0;
         return;
     }
 
     if (controller)
     {
         const HRESULT hr = controller->put_IsVisible(visible ? TRUE : FALSE);
-        WebviewDebugLog(fmt::format(L"controller visibility: hwnd=0x{:X}, visible={}, hr=0x{:08X}",
-                                    reinterpret_cast<uintptr_t>(hwnd), visible, static_cast<unsigned long>(hr)));
+        (void)0;
     }
     else
     {
-        WebviewDebugLog(fmt::format(L"controller visibility deferred: hwnd=0x{:X}, visible={}, controller=null",
-                                    reinterpret_cast<uintptr_t>(hwnd), visible));
+        (void)0;
     }
 
     if (lowerMemoryWhenHidden)
@@ -375,7 +358,7 @@ std::wstring ReadHtmlFile(const std::wstring &filePath)
     std::wifstream file(filePath);
     if (!file)
     {
-        WebviewDebugLog(fmt::format(L"HTML read failed: path='{}', GetLastError={}", filePath, GetLastError()));
+        (void)0;
         return L"";
     }
     // Use Boost Locale to handle UTF-8
@@ -383,7 +366,7 @@ std::wstring ReadHtmlFile(const std::wstring &filePath)
     std::wstringstream buffer;
     buffer << file.rdbuf();
     std::wstring content = buffer.str();
-    WebviewDebugLog(fmt::format(L"HTML read succeeded: path='{}', chars={}", filePath, content.size()));
+    (void)0;
     return content;
 }
 
@@ -511,9 +494,7 @@ int PrepareHtmlForWnds()
     ::BodyStringCandWnd = ReadHtmlFile(bodyHtmlPathCandWnd);
     std::wstring measureHtmlPathCandWnd = assetPath + measureHtmlCandWnd;
     ::MeasureStringCandWnd = ReadHtmlFile(measureHtmlPathCandWnd);
-    WebviewDebugLog(fmt::format(L"candidate assets prepared: layout={}, theme={}, page_chars={}, body_chars={}, measure_chars={}",
-                                isHorizontal ? L"horizontal" : L"vertical", candThemeSuffix, HTMLStringCandWnd.size(),
-                                BodyStringCandWnd.size(), MeasureStringCandWnd.size()));
+    (void)0;
 
     //
     // 托盘语言区菜单窗口
@@ -735,9 +716,7 @@ HRESULT OnControllerCreatedCandWnd(     //
     ICoreWebView2Controller *controller //
 )
 {
-    WebviewDebugLog(fmt::format(L"candidate controller callback: hwnd=0x{:X}, result=0x{:08X}, controller={}",
-                                reinterpret_cast<uintptr_t>(hwnd), static_cast<unsigned long>(result),
-                                controller != nullptr));
+    (void)0;
     if (!controller || FAILED(result))
     {
         ShowErrorMessage(hwnd, L"Failed to create WebView2 controller.");
@@ -746,8 +725,7 @@ HRESULT OnControllerCreatedCandWnd(     //
 
     webviewControllerCandWnd = controller;
     const HRESULT getWebviewHr = webviewControllerCandWnd->get_CoreWebView2(webviewCandWnd.GetAddressOf());
-    WebviewDebugLog(fmt::format(L"get candidate CoreWebView2: hr=0x{:08X}, webview={}",
-                                static_cast<unsigned long>(getWebviewHr), webviewCandWnd != nullptr));
+    (void)0;
 
     if (!webviewCandWnd)
     {
@@ -811,8 +789,7 @@ HRESULT OnControllerCreatedCandWnd(     //
             assetPath.c_str(),                               //
             COREWEBVIEW2_HOST_RESOURCE_ACCESS_KIND_DENY_CORS //
         );                                                   //
-        WebviewDebugLog(fmt::format(L"candidate virtual host mapping: folder='{}', hr=0x{:08X}", assetPath,
-                                    static_cast<unsigned long>(mappingHr)));
+        (void)0;
     }
 
     // Set transparent background
@@ -830,13 +807,11 @@ HRESULT OnControllerCreatedCandWnd(     //
     bounds.right += candidateBoundRightExtra;
     bounds.bottom += candidateBoundBottomExtra;
     const HRESULT boundsHr = webviewControllerCandWnd->put_Bounds(bounds);
-    WebviewDebugLog(fmt::format(L"candidate initial bounds: [{},{},{},{}], hr=0x{:08X}", bounds.left, bounds.top,
-                                bounds.right, bounds.bottom, static_cast<unsigned long>(boundsHr)));
+    (void)0;
 
     // Navigate to HTML
     HRESULT hr = webviewCandWnd->NavigateToString(HTMLStringCandWnd.c_str());
-    WebviewDebugLog(fmt::format(L"candidate NavigateToString submitted: html_chars={}, hr=0x{:08X}",
-                                HTMLStringCandWnd.size(), static_cast<unsigned long>(hr)));
+    (void)0;
     if (FAILED(hr))
     {
         ShowErrorMessage(hwnd, L"Failed to navigate to string.");
@@ -887,8 +862,7 @@ HRESULT OnControllerCreatedCandWnd(     //
                     catch (const std::exception &e)
                     {
 #ifdef FANY_DEBUG
-                        OutputDebugString(
-                            fmt::format(L"[msime]: Exception happens when parsing cand wnd webview2 message").c_str());
+                        (void)0;
 #endif
                         return S_OK;
                     }
@@ -905,20 +879,14 @@ HRESULT OnControllerCreatedCandWnd(     //
                 COREWEBVIEW2_WEB_ERROR_STATUS errorStatus = COREWEBVIEW2_WEB_ERROR_STATUS_UNKNOWN;
                 const HRESULT successHr = args->get_IsSuccess(&success);
                 const HRESULT statusHr = args->get_WebErrorStatus(&errorStatus);
-                WebviewDebugLog(fmt::format(
-                    L"candidate navigation completed: success={}, shown={}, isSuccess_hr=0x{:08X}, "
-                    L"status_hr=0x{:08X}, web_error={}",
-                    success != FALSE, ::is_global_wnd_cand_shown, static_cast<unsigned long>(successHr),
-                    static_cast<unsigned long>(statusHr), static_cast<int>(errorStatus)));
+                (void)0;
                 if (success)
                 {
                     NotifySmallWindowNavigationReady(candidateNavigationReady, L"candidate");
                 }
                 else
                 {
-                    WebviewDebugLog(fmt::format(
-                        L"candidate navigation failed: web_error={}, shown={}, topmost_applied={}",
-                        static_cast<int>(errorStatus), ::is_global_wnd_cand_shown, smallWindowTopmostApplied));
+                    (void)0;
                 }
                 if (success && ::is_global_wnd_cand_shown)
                 {
@@ -939,8 +907,7 @@ HRESULT OnControllerCreatedCandWnd(     //
             [](ICoreWebView2 *, ICoreWebView2ProcessFailedEventArgs *args) -> HRESULT {
                 COREWEBVIEW2_PROCESS_FAILED_KIND kind = COREWEBVIEW2_PROCESS_FAILED_KIND_BROWSER_PROCESS_EXITED;
                 const HRESULT hr = args->get_ProcessFailedKind(&kind);
-                WebviewDebugLog(fmt::format(L"candidate WebView2 process failed: kind={}, hr=0x{:08X}",
-                                            static_cast<int>(kind), static_cast<unsigned long>(hr)));
+                (void)0;
                 return S_OK;
             }).Get(),
         nullptr);
@@ -958,8 +925,7 @@ HRESULT OnControllerCreatedCandWnd(     //
  */
 HRESULT OnEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebView2Environment *env)
 {
-    WebviewDebugLog(fmt::format(L"candidate environment dispatch: hwnd=0x{:X}, result=0x{:08X}, env={}",
-                                reinterpret_cast<uintptr_t>(hwnd), static_cast<unsigned long>(result), env != nullptr));
+    (void)0;
     if (FAILED(result) || !env)
     {
         ShowErrorMessage(hwnd, L"Failed to create WebView2 environment.");
@@ -976,8 +942,7 @@ HRESULT OnEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebView2Environment
             })                                                                               //
             .Get()                                                                           //
     );                                                                                       //
-    WebviewDebugLog(fmt::format(L"candidate controller creation submitted: hr=0x{:08X}",
-                                static_cast<unsigned long>(hr)));
+    (void)0;
     return hr;
 }
 
@@ -1004,7 +969,7 @@ HRESULT OnControllerCreatedMenuWnd(     //
     if (!controller || FAILED(result))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to create menu window webview2 controller.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -1016,7 +981,7 @@ HRESULT OnControllerCreatedMenuWnd(     //
     if (!webviewMenuWnd)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to get webview2 instance.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -1082,7 +1047,7 @@ HRESULT OnControllerCreatedMenuWnd(     //
                 BOOL success = FALSE;
                 if (!args || FAILED(args->get_IsSuccess(&success)) || !success)
                 {
-                    WebviewDebugLog(L"menu navigation failed or incomplete");
+                    (void)0;
                     return S_OK;
                 }
                 NotifySmallWindowNavigationReady(menuNavigationReady, L"menu");
@@ -1113,7 +1078,7 @@ HRESULT OnControllerCreatedMenuWnd(     //
     if (FAILED(hr))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to navigate to string.").c_str());
+        (void)0;
 #endif
     }
 
@@ -1193,7 +1158,7 @@ HRESULT OnMenuWindowEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebView2E
     if (FAILED(result) || !env)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to create menu window webview2 environment.").c_str());
+        (void)0;
 #endif
         return result;
     }
@@ -1267,7 +1232,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (!controller || FAILED(result))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to create settings window webview2 controller.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -1277,7 +1242,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (FAILED(webviewCompositionControllerSettingsWnd.As(&webviewControllerSettingsWnd)))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to get the base WebView2 controller.").c_str());
+        (void)0;
 #endif
         return E_NOINTERFACE;
     }
@@ -1287,7 +1252,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (!webviewSettingsWnd)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to get webview2 instance.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -1336,7 +1301,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (FAILED(compositionResult))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to initialize DirectComposition.").c_str());
+        (void)0;
 #endif
         return compositionResult;
     }
@@ -1346,7 +1311,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (FAILED(rootVisualResult))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to attach the WebView root visual.").c_str());
+        (void)0;
 #endif
         return rootVisualResult;
     }
@@ -1365,7 +1330,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
     if (FAILED(hr))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to navigate to string.").c_str());
+        (void)0;
 #endif
     }
 
@@ -1379,8 +1344,7 @@ HRESULT OnControllerCreatedSettingsWnd(            //
                 {
 // 隐藏窗口
 #ifdef FANY_DEBUG
-                    OutputDebugString(
-                        fmt::format(L"[msime]: Webview2 settings window loaded and already hidden window").c_str());
+                    (void)0;
 #endif
                     BOOL cloak = FALSE;
                     DwmSetWindowAttribute(hwnd, DWMWA_CLOAK, &cloak, sizeof(cloak));
@@ -1807,7 +1771,7 @@ HRESULT OnSettingsWindowEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebVi
     if (FAILED(result) || !env)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to create settings window webview2 environment.").c_str());
+        (void)0;
 #endif
         return result;
     }
@@ -1816,7 +1780,7 @@ HRESULT OnSettingsWindowEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebVi
     if (FAILED(env->QueryInterface(IID_PPV_ARGS(&env3))) || !env3)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to get ICoreWebView2Environment3 for composition.").c_str());
+        (void)0;
 #endif
         return E_NOINTERFACE;
     }
@@ -1961,8 +1925,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
     if (!controller || FAILED(result))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(
-            fmt::format(L"[msime]: Failed to create floating toolbar window webview2 controller.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -1974,7 +1937,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
     if (!webviewFtbWnd)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to get webview2 instance.").c_str());
+        (void)0;
 #endif
         return E_FAIL;
     }
@@ -2070,7 +2033,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                 }
                 else
                 {
-                    WebviewDebugLog(L"floating-toolbar navigation failed");
+                    (void)0;
                 }
                 return S_OK;
             })
@@ -2079,10 +2042,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
     if (FAILED(navigationCompletedResult))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(
-            fmt::format(L"[msime]: Failed to register floating toolbar navigation callback: 0x{:08X}",
-                        static_cast<unsigned long>(navigationCompletedResult))
-                .c_str());
+        (void)0;
 #endif
         return navigationCompletedResult;
     }
@@ -2092,7 +2052,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
     if (FAILED(hr))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Failed to navigate to string.").c_str());
+        (void)0;
 #endif
         return hr;
     }
@@ -2125,7 +2085,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         if (mode == "cn") // Change to CN
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to CN").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToCn,
                                                               L"");
@@ -2133,7 +2093,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         else if (mode == "en") // Change to EN
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to EN").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToEn,
                                                               L"");
@@ -2145,7 +2105,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         if (mode == "fullwidth")
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to fullwidth").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(
                                 Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToFullwidth, L"");
@@ -2153,7 +2113,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         else if (mode == "halfwidth")
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to halfwidth").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(
                                 Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToHalfwidth, L"");
@@ -2165,7 +2125,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         if (mode == "puncEn")
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to puncEn").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(
                                 Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToPuncEn, L"");
@@ -2173,7 +2133,7 @@ HRESULT OnControllerCreatedFtbWnd(      //
                         else if (mode == "puncCn")
                         {
 #ifdef FANY_DEBUG
-                            OutputDebugString(fmt::format(L"[msime]: Change to puncCn").c_str());
+                            (void)0;
 #endif
                             SendToTsfWorkerThreadViaNamedpipe(
                                 Global::DataFromServerMsgTypeToTsfWorkerThread::SwitchToPuncCn, L"");
@@ -2194,14 +2154,14 @@ HRESULT OnControllerCreatedFtbWnd(      //
                     else if (type == "openSettings")
                     {
 #ifdef FANY_DEBUG
-                        OutputDebugString(fmt::format(L"[msime]: Open settings").c_str());
+                        (void)0;
 #endif
                         OpenSettingsApplication();
                     }
                     else if (type == "openEmojiPanel")
                     {
 #ifdef FANY_DEBUG
-                        OutputDebugString(fmt::format(L"[msime]: Open emoji panel").c_str());
+                        (void)0;
 #endif
                         OpenEmojiPanelApplication();
                     }
@@ -2228,8 +2188,7 @@ HRESULT OnFtbWindowEnvironmentCreated(HWND hwnd, HRESULT result, ICoreWebView2En
     if (FAILED(result) || !env)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(
-            fmt::format(L"[msime]: Failed to create floating toolbar window webview2 environment.").c_str());
+        (void)0;
 #endif
         return result;
     }
@@ -2262,16 +2221,14 @@ void InitSmallWindowWebviews(HWND candHwnd, HWND menuHwnd, HWND ftbHwnd)
         L"--no-first-run");
 
     const std::wstring appDataPath = GetAppdataPath();
-    WebviewDebugLog(fmt::format(L"shared environment creation starting: cand=0x{:X}, user_data='{}'",
-                                reinterpret_cast<uintptr_t>(candHwnd), appDataPath));
+    (void)0;
     const HRESULT createHr = CreateCoreWebView2EnvironmentWithOptions(
         nullptr,
         appDataPath.c_str(),
         options.Get(),
         Callback<ICoreWebView2CreateCoreWebView2EnvironmentCompletedHandler>(
             [candHwnd, menuHwnd, ftbHwnd](HRESULT result, ICoreWebView2Environment *env) -> HRESULT {
-                WebviewDebugLog(fmt::format(L"shared environment callback: result=0x{:08X}, env={}",
-                                            static_cast<unsigned long>(result), env != nullptr));
+                (void)0;
                 if (FAILED(result) || !env)
                 {
                     ShowErrorMessage(candHwnd, L"Failed to create the shared WebView2 environment.");
@@ -2284,18 +2241,14 @@ void InitSmallWindowWebviews(HWND candHwnd, HWND menuHwnd, HWND ftbHwnd)
                 const HRESULT menuResult = OnMenuWindowEnvironmentCreated(menuHwnd, S_OK, env);
                 const HRESULT ftbResult = OnFtbWindowEnvironmentCreated(ftbHwnd, S_OK, env);
 
-                WebviewDebugLog(fmt::format(
-                    L"small-window controller submissions: candidate=0x{:08X}, menu=0x{:08X}, ftb=0x{:08X}",
-                    static_cast<unsigned long>(candResult), static_cast<unsigned long>(menuResult),
-                    static_cast<unsigned long>(ftbResult)));
+                (void)0;
 
                 if (FAILED(candResult)) return candResult;
                 if (FAILED(menuResult)) return menuResult;
                 return ftbResult;
             })
             .Get());
-    WebviewDebugLog(fmt::format(L"shared environment creation submitted: hr=0x{:08X}",
-                                static_cast<unsigned long>(createHr)));
+    (void)0;
 }
 
 void ShutdownWebviews()
diff --git a/server/src/window/ime_windows.cpp b/server/src/window/ime_windows.cpp
index 398d1bd0..1dd01685 100644
--- a/server/src/window/ime_windows.cpp
+++ b/server/src/window/ime_windows.cpp
@@ -90,12 +90,7 @@ void LayoutFloatingToolbar(HWND hwnd, bool reset_to_default_corner)
     const BOOL ok =
         SetWindowPos(hwnd, nullptr, posX, posY, width, height, SWP_NOZORDER | SWP_NOACTIVATE);
     SyncHostWebViewBounds(::webviewControllerFtbWnd.Get(), hwnd);
-    OutputDebugStringW(fmt::format(L"[msime-webview] ftb layout: hwnd=0x{:X}, pos=({},{}), size=({},{}), "
-                                  L"scale={}, reset_corner={}, SetWindowPos={}, GetLastError={}, visible={}\n",
-                                  reinterpret_cast<uintptr_t>(hwnd), posX, posY, width, height, scale,
-                                  reset_to_default_corner, ok != FALSE, ok ? 0 : GetLastError(),
-                                  IsWindowVisible(hwnd) != FALSE)
-                           .c_str());
+    (void)0;
 }
 
 void PlaceFloatingToolbarOnScreen(HWND hwnd)
@@ -250,11 +245,7 @@ void ApplyConfiguredFloatingToolbarVisibility()
     const bool should_show = FanyImeUi::ShouldShowFloatingToolbar(
         GetConfiguredFloatingToolbarEnabled(), fullscreen, g_is_ime_active);
     const bool is_visible = IsWindowVisible(::global_hwnd_ftb) != FALSE;
-    OutputDebugStringW(fmt::format(L"[msime-webview] ftb visibility: should_show={}, is_visible={}, "
-                                  L"configured={}, fullscreen={}, ime_active={}, hwnd=0x{:X}\n",
-                                  should_show, is_visible, GetConfiguredFloatingToolbarEnabled(), fullscreen,
-                                  g_is_ime_active, reinterpret_cast<uintptr_t>(::global_hwnd_ftb))
-                           .c_str());
+    (void)0;
     if (should_show)
     {
         // Keep the dragged position across IME activate / config / fullscreen
@@ -322,7 +313,7 @@ LRESULT RegisterIMEWindowsClass(WNDCLASSEX &wcex, HINSTANCE hInstance)
     if (!RegisterClassEx(&wcex))
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Call to RegisterClassEx failed!").c_str());
+        (void)0;
 #endif
         return 1;
     }
@@ -361,7 +352,7 @@ int CreateCandidateWindow(HINSTANCE hInstance)
     if (!hwnd_cand)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Call to CreateWindow for candidate window failed!").c_str());
+        (void)0;
 #endif
         return 1;
     }
@@ -401,7 +392,7 @@ int CreateCandidateWindow(HINSTANCE hInstance)
     if (!hwnd_menu)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Call to CreateWindow for menu failed!").c_str());
+        (void)0;
 #endif
         return 1;
     }
@@ -438,16 +429,14 @@ int CreateCandidateWindow(HINSTANCE hInstance)
     if (!hwnd_ftb)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Call to CreateWindow for floating toolbar failed!").c_str());
+        (void)0;
 #endif
         return 1;
     }
     PrepareLayeredHostWindow(hwnd_ftb);
     ::global_hwnd_ftb = hwnd_ftb;
     FanyNamedPipe::RegisterStatusSnapshotWindow(hwnd_ftb);
-    OutputDebugStringW(fmt::format(L"[msime-webview] ftb created on screen: hwnd=0x{:X}, pos=({},{}), size=({},{})\n",
-                                  reinterpret_cast<uintptr_t>(hwnd_ftb), ftbX, ftbY, ftbWidth, ftbHeight)
-                           .c_str());
+    (void)0;
 
     // Cloaked show: WebView2 sees a visible on-monitor host; the user does not.
     WarmupHostWindowCloaked(hwnd_cand);
@@ -478,12 +467,12 @@ int CreateCandidateWindow(HINSTANCE hInstance)
     if (!g_hHook)
     {
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Kbd hook for IME failed!").c_str());
+        (void)0;
 #endif
         return 1;
     }
 #ifdef FANY_DEBUG
-    OutputDebugString(fmt::format(L"[msime]: Kbd hook for IME installed.").c_str());
+    (void)0;
 #endif
 
     HWINEVENTHOOK hook = SetWinEventHook( //
@@ -560,19 +549,11 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
                                    ? std::wstring{}
                                    : GetPreeditWithCaretMarker();
         std::wstring str = preedit + L"," + Global::CandidateString;
-        OutputDebugStringW(fmt::format(L"[msime-webview] show candidate requested: hwnd=0x{:X}, caret=({},{}), "
-                                      L"preedit_chars={}, candidate_chars={}, webview={}, controller={}, "
-                                      L"topmost_applied={}, cand_visible={}\n",
-                                      reinterpret_cast<uintptr_t>(hwnd), Global::Point[0], Global::Point[1],
-                                      preedit.size(), Global::CandidateString.size(), webviewCandWnd != nullptr,
-                                      webviewControllerCandWnd != nullptr, AreSmallWindowsTopmostApplied(),
-                                      IsWindowVisible(hwnd) != FALSE)
-                               .c_str());
+        (void)0;
         LogSmallWindowReadyGate(L"show-candidate");
         if (!EnsureSmallWindowsTopmost(L"show-candidate"))
         {
-            OutputDebugStringW(L"[msime-webview] show candidate: webviews not ready, topmost queued; "
-                               L"will FineTune after navigation\n");
+            (void)0;
         }
         InflateMeasureDivCandWnd(str);
 
@@ -586,8 +567,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
 
     if (message == WM_HIDE_MAIN_WINDOW)
     {
-        OutputDebugStringW(fmt::format(L"[msime-webview] hide candidate requested: hwnd=0x{:X}\n",
-                                      reinterpret_cast<uintptr_t>(hwnd)).c_str());
+        (void)0;
         // Clear first so any FineTuneWindow callback already queued bails out.
         ::is_global_wnd_cand_shown = false;
         FLOAT scale = GetForegroundWindowScale();
@@ -735,7 +715,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
     case WM_CLS_DICT_CACHE: {
         FanyNamedPipe::EnqueueResetInputSessionCacheTask();
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Cleared dictionary buffer cache.").c_str());
+        (void)0;
 #endif
         break;
     }
@@ -743,7 +723,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
     case WM_COMMIT_CANDIDATE: {
         int one_based = static_cast<int>(wParam);
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Really to commit candidate {}", one_based).c_str());
+        (void)0;
 #endif
         FanyNamedPipe::EnqueueCandidateUiAction(FanyNamedPipe::CandidateUiAction::Commit, one_based);
 
@@ -753,7 +733,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
     case WM_PIN_TO_TOP_CANDIDATE: {
         int one_based = static_cast<int>(wParam);
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Really to pin to top candidate {}", one_based).c_str());
+        (void)0;
 #endif
         FanyNamedPipe::EnqueueCandidateUiAction(FanyNamedPipe::CandidateUiAction::Pin, one_based);
 
@@ -763,7 +743,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
     case WM_DELETE_CANDIDATE: {
         int one_based = static_cast<int>(wParam);
 #ifdef FANY_DEBUG
-        OutputDebugString(fmt::format(L"[msime]: Really to delete candidate {}", one_based).c_str());
+        (void)0;
 #endif
         FanyNamedPipe::EnqueueCandidateUiAction(FanyNamedPipe::CandidateUiAction::Delete, one_based);
 
@@ -772,7 +752,7 @@ LRESULT CALLBACK WndProcCandWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
 
     case WM_CLEAR_IME_ENGINE_CACHE: {
 #ifdef FANY_DEBUG
-        OutputDebugString(L"[msime]: Clearing IME engine cache");
+        (void)0;
 #endif
         /* 清除候选词缓存 */
         FanyNamedPipe::EnqueueResetInputSessionCacheTask();
@@ -839,16 +819,7 @@ LRESULT CALLBACK WndProcMenuWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
             ::MENU_WINDOW_HEIGHT,       //
             flag                        //
         );
-        OutputDebugStringW(fmt::format(L"[msime-webview] show menu: hwnd=0x{:X}, pos=({},{}), size=({},{}), "
-                                      L"dip=({:.1f},{:.1f}), scale={}, SetWindowPos={}, GetLastError={}, "
-                                      L"webview={}, controller={}, visible={}\n",
-                                      reinterpret_cast<uintptr_t>(::global_hwnd_menu), menuX, menuY,
-                                      ::MENU_WINDOW_WIDTH, ::MENU_WINDOW_HEIGHT, ::MENU_CONTENT_WIDTH_DIP,
-                                      ::MENU_CONTENT_HEIGHT_DIP, scale, okShowMenu != FALSE,
-                                      okShowMenu ? 0 : GetLastError(), webviewMenuWnd != nullptr,
-                                      webviewControllerMenuWnd != nullptr,
-                                      IsWindowVisible(::global_hwnd_menu) != FALSE)
-                               .c_str());
+        (void)0;
         if (!okShowMenu)
         {
             ShowWindow(::global_hwnd_menu, SW_SHOWNOACTIVATE);
@@ -893,11 +864,7 @@ LRESULT CALLBACK WndProcMenuWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
             ApplyMenuPhysicalSizeFromDips(hwnd, scale, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
         }
         SyncHostWebViewBounds(::webviewControllerMenuWnd.Get(), hwnd);
-        OutputDebugStringW(fmt::format(L"[msime-webview] menu WM_DPICHANGED: size=({},{}), dip=({:.1f},{:.1f}), "
-                                      L"scale={}\n",
-                                      ::MENU_WINDOW_WIDTH, ::MENU_WINDOW_HEIGHT, ::MENU_CONTENT_WIDTH_DIP,
-                                      ::MENU_CONTENT_HEIGHT_DIP, scale)
-                               .c_str());
+        (void)0;
         // Remeasure in case font/layout metrics shifted with the new DPI.
         SetTimer(hwnd, TIMER_ID_INIT_WEBVIEW_MENU, 1, nullptr);
         return 0;
@@ -937,11 +904,7 @@ LRESULT CALLBACK WndProcMenuWindow(HWND hwnd, UINT message, WPARAM wParam, LPARA
                         flag |= wasVisible ? SWP_SHOWWINDOW : SWP_HIDEWINDOW;
                         FLOAT scale = GetWindowScale(hwnd);
                         ApplyMenuPhysicalSizeFromDips(hwnd, scale, flag);
-                        OutputDebugStringW(fmt::format(L"[msime-webview] menu measured: size=({},{}), "
-                                                      L"dip=({:.1f},{:.1f}), scale={}\n",
-                                                      ::MENU_WINDOW_WIDTH, ::MENU_WINDOW_HEIGHT,
-                                                      ::MENU_CONTENT_WIDTH_DIP, ::MENU_CONTENT_HEIGHT_DIP, scale)
-                                               .c_str());
+                        (void)0;
                     }
                 });
             }
@@ -1467,7 +1430,7 @@ LRESULT CALLBACK WndProcFtbWindow(HWND hwnd, UINT message, WPARAM wParam, LPARAM
     case WM_DPICHANGED: {
         // Recompute from design DIPs rather than only accepting the suggested
         // rect. Keep the user's dragged top-left instead of snapping home.
-        OutputDebugStringW(fmt::format(L"[msime-webview] ftb WM_DPICHANGED: dpi={}\n", HIWORD(wParam)).c_str());
+        (void)0;
         LayoutFloatingToolbar(hwnd, false);
         return 0;
     }
@@ -1507,15 +1470,10 @@ int FineTuneWindow(HWND hwnd)
 
     int caretX = Global::Point[0];
     int caretY = Global::Point[1];
-    OutputDebugStringW(fmt::format(L"[msime-webview] candidate fine-tune started: hwnd=0x{:X}, caret=({},{}), "
-                                  L"scale={}, shown={}, webview={}, controller={}, topmost_applied={}\n",
-                                  reinterpret_cast<uintptr_t>(hwnd), caretX, caretY, scale,
-                                  ::is_global_wnd_cand_shown, webviewCandWnd != nullptr,
-                                  webviewControllerCandWnd != nullptr, AreSmallWindowsTopmostApplied())
-                           .c_str());
+    (void)0;
     if (!webviewCandWnd)
     {
-        OutputDebugStringW(L"[msime-webview] candidate fine-tune aborted: webviewCandWnd is null\n");
+        (void)0;
         LogSmallWindowReadyGate(L"fine-tune-no-webview");
         return 0;
     }
@@ -1532,9 +1490,7 @@ int FineTuneWindow(HWND hwnd)
         // measure callback was still pending — do not resurrect it.
         if (!::is_global_wnd_cand_shown || caretY == Global::INVALID_Y)
         {
-            OutputDebugStringW(fmt::format(L"[msime-webview] candidate fine-tune abandoned after measurement: "
-                                          L"shown={}, caretY={}\n",
-                                          ::is_global_wnd_cand_shown, caretY).c_str());
+            (void)0;
             return;
         }
 
@@ -1549,7 +1505,7 @@ int FineTuneWindow(HWND hwnd)
         // Empty composition with no candidates means the session already ended.
         if (GlobalIme::composition.raw_input_with_cases.empty() && Global::CandidateString.empty())
         {
-            OutputDebugStringW(L"[msime-webview] candidate fine-tune abandoned: composition and candidates empty\n");
+            (void)0;
             return;
         }
 
@@ -1595,15 +1551,7 @@ int FineTuneWindow(HWND hwnd)
             UpdateSmallWindowWebviewVisibility(hwnd, true);
             RECT actualRect{};
             GetWindowRect(hwnd, &actualRect);
-            OutputDebugStringW(fmt::format(
-                L"[msime-webview] candidate window positioned: requested_pos=({},{}), requested_size=({},{}), "
-                L"flags=0x{:X}, success={}, GetLastError={}, actual_rect=[{},{},{},{}], visible={}, "
-                L"topmost_applied={}, measure=({:.1f},{:.1f})\n",
-                properPos->first, properPos->second, newWidth, newHeight, newFlag, positioned != FALSE,
-                positioned ? 0 : GetLastError(), actualRect.left, actualRect.top, actualRect.right, actualRect.bottom,
-                IsWindowVisible(hwnd) != FALSE, AreSmallWindowsTopmostApplied(), containerSize.first,
-                containerSize.second)
-                                   .c_str());
+            (void)0;
         });
     });
     return 0;
diff --git a/server/src/window/window_hook.cpp b/server/src/window/window_hook.cpp
index 9cf8ee92..e26c3ac7 100644
--- a/server/src/window/window_hook.cpp
+++ b/server/src/window/window_hook.cpp
@@ -86,7 +86,7 @@ LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
             {
 // 执行候选项删除逻辑，PostMessage 给窗口过程去执行
 #ifdef FANY_DEBUG
-                OutputDebugString(fmt::format(L"[msime]: To delete candidate {}", idx + 1).c_str());
+                (void)0;
 #endif
                 PostMessage(::global_hwnd, WM_DELETE_CANDIDATE, idx + 1, 0);
                 // This is an IME command, not text intended for the foreground