Windows security hanging on the logo and then crashing windows 11

jay wharton 0 Reputation points
2025-07-12T13:00:34.8+00:00

Hello, i've been trying to access my windows security app however as soon as I open it all that happens is the logo will appear for about a minute and then the app with crash.

I have tried:

Repairing and resetting the app in settings

sfc \scannow

DISM scans

malwarebytes and fortect scans that show nothing

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

Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Removing it from the policies file

Reinstalling windows 11 from the online iso

I applied all of these methods with a restart afterwards and none of them have worked.

If it helps to know, I noticed that when looking further into details in the task manager that "SecHealthUI.exe" will show that its "running" when I open the app but then after a few seconds will then say not responding.

Are there any other methods that I could try to use?

Thank you

Microsoft Security | Microsoft Defender | Other
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