If the Windows security or defender is not working in the latest Windows 11, you can quickly fix the problem. This is a common issue you might get after updating to Windows 11.
You can try to reset the Windows security app or update Windows 11.
Steps to fix "Windows Security Not Opening" Problem.
1. Enable background permissions.
2. Reset & repair the Windows security app.
3. Reset using PowerShell
4. Windows update.
The above steps should help you to fix the problem.
Copy. & paste the below command on PowerShell
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
Disclaimer:- It is advised to create a system restore point or take a complete backup of your device before you follow any tutorials. All tutorials are verified ways to fix, customize, or fine-tune your devices; just in case, take a full backup.
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