How to Fix Windows 11 Security Blank Screen Issue

Sometimes, Windows 11 Security can encounter issues, as some users only see a blank screen when they open the app. This issue was caused by a Windows 11 update of 23H2. If you update your OS to the latest version, this issue should not appear anymore. However, if the issue persists, here’s what you can do.

How to Fix Windows Defender Blank Screen Issue in Windows 11?​

1. Perform a Clean Boot​

• Open Start Menu: Click the Windows icon on the taskbar.
• Search "msconfig": Type "msconfig" in the search bar and press Enter.
• Open System Configuration: Click on System Configuration from the search results.
• Navigate to Services Tab: In the System Configuration window, click on the Services tab.
• Hide Microsoft Services: Check the box labeled "Hide all Microsoft services" at the bottom of the window.
• Disable Other Services: Click on "Disable all" to disable all third-party services.
• Open Task Manager: Switch to the Startup tab, and click "Open Task Manager."
• Disable Startup Items: In Task Manager, disable all startup items by right-clicking each one and selecting "Disable."
• Restart Your Computer: Close Task Manager, click "OK" in the System Configuration window, and restart your computer.

By performing a clean boot, you'll start Windows with a minimal set of drivers and startup programs, which can help isolate if a third-party service is causing the issue.

2. Use the Feedback Hub App​

• Open Start Menu: Click the Windows icon on the taskbar.
• Search "Feedback Hub": Type "Feedback Hub" in the search bar and press Enter.
• Launch Feedback Hub: Click on the Feedback Hub app from the search results.
• Report the Issue: Click on "Report a problem."
• Fill in Details: Provide a detailed description of the issue, including screenshots if possible.
• Submit Feedback: Click "Submit" to send your feedback to Microsoft.

Reporting the issue through the Feedback Hub can help Microsoft investigate and potentially provide a fix in future updates.

3. Run the System File Checker (SFC) Tool​

• Open Command Prompt as Administrator:
  • Click the Windows icon on the taskbar.
  • Type "cmd" in the search bar.
  • Right-click on Command Prompt and select "Run as administrator."
• Run SFC Command: Type sfc /scannow and press Enter.
• Wait for Scan to Complete: Allow the scan to complete, which may take some time.

Running the SFC tool helps repair any corrupted system files that could be causing the issue.

4. Use the DISM Tool​

• Open Command Prompt as Administrator: Follow the steps in Solution 3 to open Command Prompt with administrative privileges.
• Run DISM Commands:
  • Type DISM /Online /Cleanup-Image /StartComponentCleanup and press Enter.
  • After the first command completes, type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
• Wait for Process to Complete: Allow each process to complete, which may take several minutes.

The DISM tool can fix issues with the Windows image that might be causing the blank screen in Windows Defender.

5. Repair Windows Security​

• Press the Windows key + I to open the Settings app. In the left pane, select the Apps option.
• Select Apps & features in the right pane.
  
  
  
• Now, locate the Windows Security option and click the three vertical dots before it.
• Select Advanced options.
  
• Finally, click the Repair button and wait for the process to complete.
  
  

If Windows 11 Security keeps showing a blank screen, it might be due to small issues. What you need to here is to repair the app from the Settings app.

6. Full Reinstallation of Windows 11​

• Backup Your Data: Ensure you have backed up all important data to an external drive or cloud storage.
• Download Windows 11 Media Creation Tool: Go to the official Microsoft website and download the Windows 11 Media Creation Tool.
• Create Installation Media: Use the tool to create a bootable USB drive or DVD.
• Boot from Installation Media: Restart your computer and boot from the USB drive or DVD.
• Select "Install Now": Follow the on-screen instructions to install Windows 11.
• Choose "Custom Installation": Select the option for a custom installation.
• Format Drive (Optional): You can format the primary drive if you want a completely fresh installation.
• Complete Installation: Follow the remaining prompts to complete the installation.

Performing a full reinstallation of Windows 11 can resolve persistent issues by providing a clean slate.

These solutions should help resolve the blank screen issue with Windows Defender on Windows 11. Make sure to follow each step carefully for the best results.