Windows 11 Security not working

How to Fix Windows Security Not Opening on Windows 11?

1. Repair and Reset the Windows Security App

1. Go to Settings.
2. Select Apps.
3. Go to Apps & features.
4. Locate the Windows Security app.
5. Click on the three dots and select Advanced option

6. Hit the Repair button.
7. If the issue persists, hit the Reset button.

2. Second options is to use Windows powershell.

Launch Powershell with administrator rights and run the following command:

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

Close Powershell and check Security working.