diff --git a/.github/workflows/release-tauri.yml b/.github/workflows/release-tauri.yml
index fab870bd..462635cd 100644
--- a/.github/workflows/release-tauri.yml
+++ b/.github/workflows/release-tauri.yml
@@ -254,16 +254,32 @@ jobs:
           # 所以单一 `tauri build` 永远拿不到 NSIS 的 .exe.sig。
           # Pass 1：NSIS 独立跑——必须成功，产出 *_x64-setup.exe(.sig) 给 updater。
           # Pass 2：MSI 独立跑——允许失败，Repair 步骤兜底 light.exe 重链。
+          # Beta 版跳过 MSI：Windows Installer / WiX 无法表示 `1.2.3-Beta.1`
+          # 这类非纯数字 prerelease 标识，稳定版仍然照常产出 MSI。
           if [ -n "${TAURI_SIGNING_PRIVATE_KEY:-}" ]; then
             npm run tauri -- build --bundles nsis --config '{"bundle":{"createUpdaterArtifacts":true}}'
             nsis_exit=$?
-            npm run tauri -- build --bundles msi --config '{"bundle":{"createUpdaterArtifacts":true}}'
-            msi_exit=$?
+            if [ "${OPENLESS_RELEASE_CHANNEL:-stable}" = "beta" ]; then
+              echo "OPENLESS_SKIP_WINDOWS_MSI=1" >> "$GITHUB_ENV"
+              echo "[info] Skipping MSI bundle for beta release channel."
+              msi_exit=0
+            else
+              echo "OPENLESS_SKIP_WINDOWS_MSI=0" >> "$GITHUB_ENV"
+              npm run tauri -- build --bundles msi --config '{"bundle":{"createUpdaterArtifacts":true}}'
+              msi_exit=$?
+            fi
           else
             npm run tauri -- build --bundles nsis
             nsis_exit=$?
-            npm run tauri -- build --bundles msi
-            msi_exit=$?
+            if [ "${OPENLESS_RELEASE_CHANNEL:-stable}" = "beta" ]; then
+              echo "OPENLESS_SKIP_WINDOWS_MSI=1" >> "$GITHUB_ENV"
+              echo "[info] Skipping MSI bundle for beta release channel."
+              msi_exit=0
+            else
+              echo "OPENLESS_SKIP_WINDOWS_MSI=0" >> "$GITHUB_ENV"
+              npm run tauri -- build --bundles msi
+              msi_exit=$?
+            fi
           fi
           echo "TAURI_BUILD_EXIT=$msi_exit" >> "$GITHUB_ENV"
           # NSIS 是 updater 的硬依赖，挂了就直接 fail step。
@@ -283,6 +299,10 @@ jobs:
         working-directory: 'openless-all/app'
         run: |
           $exitCode = $env:TAURI_BUILD_EXIT
+          if ($env:OPENLESS_SKIP_WINDOWS_MSI -eq '1') {
+            Write-Host "[ok] Skipping MSI repair for beta release channel."
+            return
+          }
           $appRoot = (Resolve-Path .).Path
           $msi = Get-ChildItem "src-tauri\target\release\bundle\msi\*.msi" -ErrorAction SilentlyContinue | Select-Object -First 1
           if ($msi) {
@@ -329,13 +349,17 @@ jobs:
         working-directory: 'openless-all/app'
         run: |
           $nsis = Get-ChildItem "src-tauri\target\release\bundle\nsis\*.exe" -ErrorAction Stop | Select-Object -First 1
-          $msi = Get-ChildItem "src-tauri\target\release\bundle\msi\*.msi" -ErrorAction Stop | Select-Object -First 1
           if (-not $nsis) { throw "NSIS installer not found." }
-          if (-not $msi) { throw "MSI installer not found." }
           powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\scripts\windows-ime-install-smoke.ps1 -InstallerPath $nsis.FullName -InstallerKind nsis
           if ($LASTEXITCODE -ne 0) {
             throw "NSIS installer smoke failed with exit $LASTEXITCODE"
           }
+          if ($env:OPENLESS_SKIP_WINDOWS_MSI -eq '1') {
+            Write-Host "[ok] Skipping MSI smoke for beta release channel."
+            return
+          }
+          $msi = Get-ChildItem "src-tauri\target\release\bundle\msi\*.msi" -ErrorAction Stop | Select-Object -First 1
+          if (-not $msi) { throw "MSI installer not found." }
           powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\scripts\windows-ime-install-smoke.ps1 -InstallerPath $msi.FullName -InstallerKind msi
           if ($LASTEXITCODE -ne 0) {
             throw "MSI installer smoke failed with exit $LASTEXITCODE"