5 Fixes for Windows Security App Showing White Screen on Windows 11

Quick Fixes

• Open Windows Services, right-click the Security Center service, and select Restart.
• Repair and reset the Windows Security app from Windows Settings > Installed apps > Windows Security > Advanced options.
• Reinstall Windows Security on Windows 11 using the Terminal command.

Common Fixes

• Reboot PC: Press the Windows + X shortcut to open the Power User Menu, select Shut down or sign out, and click Restart.
• Perform a clean boot: Clean boot your Windows 11 PC and open the Windows Security app. If it works fine, review installed apps and uninstall unnecessary third-party apps that are creating conflicts.
• Update Windows 11: Press the Windows + I shortcut to open the Settings app, select Windows Update from the left sidebar, and install new system updates.

Fix 1: Manually Restart the Windows Security Center

The Windows Security Center service controls the functioning of the Windows Security app. Restarting the service manually should resolve the latter’s white screen error.

Step 1: Press the Windows + R shortcut to open the Run dialog, type services.msc, and press Enter.

Step 2: Locate the Security Center service in the list and right-click to Restart it. Reopen the Windows Security app.

Fix 2: Repair and Reset the Windows Security App

Incorrect configurations and corrupt app files are common reasons for the Windows Security app showing a white screen error. Repair or reset the app to fix it.

Note: Resetting the Windows Security app deletes all its app data.

Step 1: Open Windows Settings (press the Windows + I shortcut) > select Apps from the left sidebar > click Installed apps.

Step 2: Locate Windows Security > click its three-dot menu > select Advanced options.

Step 3: Scroll down and click Repair. If it doesn’t solve the problem, select Reset to restore the app to its default configuration.

Fix 3: Edit the Windows Registry

If the Windows Security app is disabled under system settings, it’ll fail to launch on Windows 11, showing the white screen error. Tweak its settings using the Registry Editor app to restore normalcy.

Step 1: Open the Run dialog (press the Windows + R shortcut) > type regedit > press Enter.

Step 2: Copy-paste the below path into the address bar and double-click the Start key.

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SecurityHealthService

Step 3: Set its Value data to 1 and click OK to save changes.

Fix 4: Repair Corrupt System Files With SFC and DISM Scans

If certain system files or Windows components linked to Windows Security are missing or corrupt, the app may show a white screen upon launch. Run the SFC and DISM scans to repair the system image.

Step 1: Press the Windows key > search Command Prompt > click Run as administrator.

Step 2: Copy-paste the following command and press Enter.

SFC /scannow

Step 3: Next, execute the below DISM commands sequentially and restart your Windows 11 PC.

DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

Fix 5: Reinstall the Windows Security App

If nothing works, reinstall the Windows Security app using Terminal on Windows 11.

Step 1: Press the Windows key > search Windows PowerShell > click Run as Administrator.

Step 2: Copy-paste the following command, press Enter, and reboot your PC.

Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage