diff --git a/apps/desktop/src/main/desktop-update-flow.test.mjs b/apps/desktop/src/main/desktop-update-flow.test.mjs
index aa9f92e4..44fa182b 100644
--- a/apps/desktop/src/main/desktop-update-flow.test.mjs
+++ b/apps/desktop/src/main/desktop-update-flow.test.mjs
@@ -49,7 +49,7 @@ describe("desktop update flow", () => {
     expect(systemInfoSource).toContain("getClientRuntimeDiagnostics");
     expect(systemInfoSource).toContain('t("systemInfo.runtimeEngine")');
     expect(systemInfoSource).toContain('t("systemInfo.connectionSection")');
-    expect(systemInfoSource).toContain('t("systemInfo.dataDirectory")');
+    expect(systemInfoSource).not.toContain('t("systemInfo.dataDirectory")');
     expect(mainSource).toContain("dataDir: sidecarDataDirectory(activeAccountId)");
   });
 
diff --git a/apps/web/src/components/settings/SystemInfoPanel.test.mjs b/apps/web/src/components/settings/SystemInfoPanel.test.mjs
index 231b64da..fb946edf 100644
--- a/apps/web/src/components/settings/SystemInfoPanel.test.mjs
+++ b/apps/web/src/components/settings/SystemInfoPanel.test.mjs
@@ -17,9 +17,9 @@ describe("system information client/instance version hint", () => {
 });
 
 describe("system information diagnostic fields", () => {
-  test("shows desktop instance URL and data directory only as local-only fields", () => {
+  test("shows desktop instance URL as local-only field and omits data directory", () => {
     expect(source).toContain('t("systemInfo.instanceUrl")');
-    expect(source).toContain('t("systemInfo.dataDirectory")');
+    expect(source).not.toContain('t("systemInfo.dataDirectory")');
     expect(source).toContain("localOnly: true");
     expect(source).toContain('clientKind === "desktopApp"');
     expect(source).toContain("getShareableWebSystemInfoItems");
diff --git a/apps/web/src/components/settings/SystemInfoPanel.tsx b/apps/web/src/components/settings/SystemInfoPanel.tsx
index 4106b3ea..6d4b7fc1 100644
--- a/apps/web/src/components/settings/SystemInfoPanel.tsx
+++ b/apps/web/src/components/settings/SystemInfoPanel.tsx
@@ -223,15 +223,6 @@ const getWebSystemInfoGroups = (
         },
         { label: t("systemInfo.language"), value: navigator.language || language, mono: true },
         { label: t("systemInfo.timeZone"), value: timeZone, mono: true, colSpan: "double-sm" },
-        ...(clientKind === "desktopApp"
-          ? [{
-              label: t("systemInfo.dataDirectory"),
-              value: diagnostics.clientRuntime?.dataDirectory ?? t("systemInfo.unknown"),
-              mono: true,
-              colSpan: "full" as const,
-              localOnly: true,
-            }]
-          : []),
       ],
     },
   ];
diff --git a/apps/web/src/lib/system-diagnostics.ts b/apps/web/src/lib/system-diagnostics.ts
index 43ea9d8f..65d7bf90 100644
--- a/apps/web/src/lib/system-diagnostics.ts
+++ b/apps/web/src/lib/system-diagnostics.ts
@@ -7,7 +7,6 @@ export type ClientRuntimeDiagnostics = {
   appVersion: string | null;
   architecture: string | null;
   autoUpdateSupported: boolean | null;
-  dataDirectory: string | null;
   engine: string | null;
   operatingSystem: string | null;
 };
@@ -81,7 +80,6 @@ export const getClientRuntimeDiagnostics = async (): Promise<ClientRuntimeDiagno
       appVersion: info.appVersion,
       architecture: info.architecture === "unknown" ? null : info.architecture,
       autoUpdateSupported: info.autoUpdateSupported,
-      dataDirectory: info.dataDir && info.dataDir !== "unknown" ? info.dataDir : null,
       engine: [
         info.electron === "unknown" ? null : `Electron ${info.electron}`,
         info.chrome === "unknown" ? null : `Chromium ${info.chrome}`,
@@ -108,7 +106,6 @@ export const getClientRuntimeDiagnostics = async (): Promise<ClientRuntimeDiagno
     appVersion: null,
     architecture: architecture || null,
     autoUpdateSupported: null,
-    dataDirectory: null,
     engine: browserEngine(navigator.userAgent),
     operatingSystem: browserOperatingSystem(
       navigator.userAgent,
diff --git a/packages/shared/src/i18n/en-US.ts b/packages/shared/src/i18n/en-US.ts
index b1bbe670..64f83433 100644
--- a/packages/shared/src/i18n/en-US.ts
+++ b/packages/shared/src/i18n/en-US.ts
@@ -1191,7 +1191,6 @@ export const enUS = {
     runtimeEngine: "Runtime engine",
     language: "Language",
     timeZone: "Time zone",
-    dataDirectory: "Data directory",
     instanceConnection: "Instance connection",
     requestLatency: "Health check time",
     lastSuccessfulSync: "Last successful sync",
diff --git a/packages/shared/src/i18n/ja.ts b/packages/shared/src/i18n/ja.ts
index 3c2d42de..2246816d 100644
--- a/packages/shared/src/i18n/ja.ts
+++ b/packages/shared/src/i18n/ja.ts
@@ -1191,7 +1191,6 @@ export const ja = {
     runtimeEngine: "ランタイムエンジン",
     language: "言語",
     timeZone: "タイムゾーン",
-    dataDirectory: "データディレクトリ",
     instanceConnection: "インスタンス接続",
     requestLatency: "ヘルスチェック時間",
     lastSuccessfulSync: "最後に成功した同期",
diff --git a/packages/shared/src/i18n/zh-CN.ts b/packages/shared/src/i18n/zh-CN.ts
index aef32bb8..e0e92342 100644
--- a/packages/shared/src/i18n/zh-CN.ts
+++ b/packages/shared/src/i18n/zh-CN.ts
@@ -1191,7 +1191,6 @@ export const zhCN = {
     runtimeEngine: "运行引擎",
     language: "语言",
     timeZone: "时区",
-    dataDirectory: "数据目录",
     instanceConnection: "实例连接",
     requestLatency: "健康检查耗时",
     lastSuccessfulSync: "最近成功同步",