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How To Fix Quickly Windows Security Not Opening In Windows 11?

Well, a Windows PC’s first line of defense is Windows Security. If you do not install third-party antivirus and antimalware software to defend your PC from the infection, you must rely on Windows Security. It does an excellent job protecting your PC from online hazards, but problems can arise if Windows Security does not open or function properly. Such issues can appear at random on Windows Security. This post will walk you through the troubleshooting steps necessary to fix Windows 11 Security not opening or working.

How To Fix Quickly Windows Security Not Opening In Windows 11?

Experiencing issues with the Windows Security app? Listed below are some troubleshooting steps for fixing this issue.

Restart Computer

The very first thing you can attempt is restarting your PC. Restarting your PC will eliminate any transient bug you might be facing with Windows Security. Next, restart your PC and check to see if the problem has been resolved; if not, move to the next step in this article.Windows Security Not Opening

Repair/Reset Windows Security

Windows 11 includes an option to repair and reset the app. For example, you can try repairing or resetting Windows Security if it is not opening on your PC. Follow the steps outlined below to repair the Windows 11 Security app.

  • Windows + I will open the Windows 11 Settings app.
  • Then, click the Apps link on the left.
  • On the right, click Installed Apps. Click the three dots next to Windows Security in the list of apps, then click Advanced Options.
  • To repair the app, scroll to the Reset section and click the Repair icon.

This should fix the issue you’ve been facing with Windows Security. Click the Reset button beneath the Repair button if repairing the app doesn’t fix the issue.

Run SFC & DISM Scan

Corrupted system files may also be responsible for this Windows Security issue. You can resolve this issue by running the SFC scan and DISM scan. You should first run the SFC scan; if that doesn’t fix the issue, you should run the DISM scan. Below are the instructions required to run the SFC scan.

  • Launch the Start menu, search for Command Prompt, and then run it as administrator.
  • To execute the command, type the following command and then press Enter.
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sfc /scannow

  • Wait until the process is finished before starting.
  • Now, exit the command prompt and restart the PC.

You can proceed with the DISM scan if the SFC scan doesn’t fix the issue. Detailed below are the steps required to run the DISM scan.

  • First, execute the Command Prompt as an administrator.
  • Type and execute each of the following commands sequentially.
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
  • Once the process is done, restart the PC.

Disable Third-Party Antivirus

Antivirus or antimalware software from a third party can interfere with Windows Security’s operation. You can attempt disabling any third-party antivirus software on your system. If you continue to face the issue, attempt uninstalling the antivirus software and checking again.Windows Security Not Opening

Reinstall Windows Security

If you’re facing issues with the Windows Security app on your PC, you can reinstall it. This is possible with Windows PowerShell.

  • Use the Windows + S key combination to search for Windows PowerShell. Select it, then click the Run as administrator button.
  • Now, execute the following PowerShell commands sequentially.
Set-ExecutionPolicy Unrestricted
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
  • The preceding commands will reinstall the Windows Security app on your PC.

Reset PC

Last, you can reset your PC if Windows Security is not working. This will reinstall your apps, reset your settings, and reinstall Windows. Follow the instructions outlined below to accomplish this.

  • Press the Windows key on the keyboard, then search for and open the Reset This PC option.
  • Click here to reset your PC.

reset pc

  • You will now have 2 options: Keep My Files and Remove Everything. Choose one option based on your preferences.Keep my Files
  • You can now choose between Cloud Download and Local Reinstall to reinstall Windows. Choose your favored option to proceed.
  • The reset process will now start, and it could take some time.
  • Your PC will restart once the reset is complete. If you configure your PC, Windows Security will not function correctly.


These were all the troubleshooting steps to fix Windows Security not opening or working. You can follow the instructions above to help fix this issue if you have been facing issues with the Windows Security app. Let us know in the comments portion if you need help with the steps mentioned.

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