要恢復(fù)Windows系統(tǒng)字體，請(qǐng)先檢查是否使用第三方工具修改過(guò)字體，如有則通過(guò)該工具的“恢復(fù)默認(rèn)”選項(xiàng)重置；若無(wú)工具可用，可手動(dòng)通過(guò)註冊(cè)表編輯器定位HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts，確保Segoe UI相關(guān)字體值正確指向segoeui.ttf等文件，必要時(shí)先備份註冊(cè)表；接著以管理員身份運(yùn)行命令提示符並執(zhí)行sfc /scannow命令修復(fù)系統(tǒng)文件；最後前往設(shè)置→個(gè)性化→主題，選擇Windows默認(rèn)亮色或暗色主題以還原整體視覺(jué)設(shè)置。以上步驟可有效恢復(fù)系統(tǒng)字體至原始狀態(tài)，無(wú)需重裝系統(tǒng)。

If your Windows system font has changed—maybe after a third-party tweak, a registry edit, or using a customization tool—you can restore the original system font by resetting font settings to default. Here's how to do it safely and effectively.

1. Check if a third-party tool changed the font

Many users modify system fonts using tools like Windows 10/11 Personalizer , UltraUXThemePatcher , or registry tweakers. If you used such a tool:

• Open the tool again.
• Look for an option like "Restore Defaults" , "Reset Theme" , or "Revert to Original" .
• Apply the reset and restart your computer.

?? Note: If you don't remember which tool you used, uninstall recently added customization software from Settings > Apps > Installed apps .

2. Manually reset font settings via Registry (Advanced)

If no tool is available, the system font may have been changed directly in the registry. You can revert it manually:

1. Press Win R , type regedit , and press Enter .

   

2. Navigate to:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts

3. In the right pane, look for font entries like:

   • Segoe UI (TrueType)
   • Segoe UI Bold (TrueType)
   • Segoe UI Italic (TrueType)

4. Ensure their values point to the correct font files:

   • Segoe UI (TrueType) → segoeui.ttf
   • Segoe UI Bold (TrueType) → segoeuib.ttf
   • Segoe UI Italic (TrueType) → segoeuii.ttf

5. If any entry is missing or incorrect:

   • Right-click > Modify
   • Enter the correct filename (eg, segoeui.ttf )
   • Click OK

6. Restart your computer.

? Tip: Back up the registry before making changes (File > Export).

3. Use System File Checker (SFC) to repair system files

Corrupted or missing system font files can cause display issues. Run SFC to restore them:

1. Open Command Prompt as Administrator :
   • Press Win X > Choose Terminal (Admin) or Command Prompt (Admin) .
2. Type this command and press Enter:

    sfc /scannow

3. Wait for the scan to complete (can take 15–20 minutes).
4. If issues are found, SFC will replace corrupted files with original versions.
5. Restart your PC after completion.

? This ensures segoeui.ttf and other core system files are intact.

4. Apply a default theme

Sometimes font changes are tied to visual themes:

1. Go to Settings > Personalization > Themes
2. Select Windows (light) or Windows (dark) —the default themes.
3. This often resets font, color, and size settings to default.

Final Notes

• The default system font in Windows 10 and 11 is Segoe UI .
• Avoid editing fonts or registry unless necessary—incorrect changes can affect system stability.
• If you're unsure, creating a system restore point beforehand is a good idea.

Basically, restoring the original font comes down to undoing manual changes, repairing system files, and reverting to default themes. Most cases are fixable without reinstalling Windows.

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