Nevertheless, one of the most frequently encountered concerns has been that, after an upgrade or random upgrade, the Windows 11 Windows Security is not opening or functioning as expected.

Why is my Windows Security not opening on Windows 11?

The reasons Windows Security settings are not opening or launching on Windows 11 after upgrading are close to close. Below are the popular reasons:

Glitches with the app: One of the reasons Windows security is not loading on Windows 11 is some glitches preventing it from opening. The solution here is to reset the app. Faulty system files: If the system files meant to load the Windows Security apps are faulty, the app won’t open. You need to repair the system files to fix this.

How can I fix the Windows 11 Windows Security not opening issue?

1. Reset using PowerShell Command

You need to reset the app if Windows Security is not working or Windows Defender is not opening. The command below has worked for many. You can reinstall the app using the second command if resetting does not work.

2. Repair the app

Allow the Repair process to finish before rebooting your computer to guarantee that your changes are applied. Then, bystarting Windows Security lets you see if its functionality has been restored.

3. Reset the app

4. Run SFC

The process may take some time to finish, so you may need to restart your computer. SFC will automatically find and restore corrupted files and folders. If that does not help, you can try Restoro, which is much more advanced than Windows built-in tools. SPONSORED

5. Run DISM

Continue to be patient until the process is finished. Be advised that the process could take up to ten minutes to finish. Once you’ve completed this step, restart your computer to ensure the changes take effect.

6. Disable your antivirus

With the fixes above, you should be able to fix the Windows Security not opening on Windows 11 issue. If you want to use a third-party tool, check out our post on five of the best antiviruses for Windows 11. Alternatively, you can look at our article on the best antiviruses with low CPU usage for Windows 11. Let us know in the comments section below which solution worked best for you in solving the Windows 11 Windows Defender not working issue and which antivirus software you prefer.

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