Windows 11's Windows Security App can't open.

bygabee
Copper Contributor
Apr 26, 2022
MASA-0 I got the same error, so this is what I did:

Open PowerShell, type: Get-AppxPackage Microsoft.SecHealthUI -AllUsers
Type enter.

Open it again and type everything now: Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
Type enter.

Close PowerShell and try opening the Windows Security app. It worked for me!
- SasGx
  Copper Contributor
  May 02, 2022
  Thank you so much finally got it working by following your steps.
tripleamac
Copper Contributor
Mar 08, 2022
MASA-0 any luck? I get the same thing.
- Little_Joe
  Bronze Contributor
  Mar 09, 2022
  Try the following if the previously does not works for you:
  Get-AppxPackage -allusers *SecHealthUI* | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}
  - NandoCanedo
    Copper Contributor
    Mar 15, 2022
    Yay! Thanks! That one worked for me!
syn-ack
Copper Contributor
May 11, 2022
You have to run this with Local Admin privs
adammuiz
Copper Contributor
May 24, 2022
MASA-0 Please try run PowerShell as Administrator.
and if you still having problem,
make sure that you already update Windows to last version.

Then run as Administrator again PowerShell and command
"Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage"

I hope it fixed.
Reference : Windows 11 Can’t Open Windows Security

I have same problem and this is work
Ali-BOccultish
Copper Contributor
Jun 14, 2022
MASA-0 I'm getting in red:

Get-AppxPackage : A positional parameter cannot be found that accepts argument 'AllUsers' . At line:1 char:1
+ Get-AppxPackage Microsoft.SecHealthUI - AllUsers | Reset-AppPackage
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+CategoryInfo :Invalid argument: ( : ) [Get-AppxPackage], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.Windows.Appx.PackageManager.Commands.GetAppxPackageCommand
NazmulAyyan
Copper Contributor
Oct 11, 2023
Have you solved the problem? I have the same problem. I copied and pasted the command but it didn't work like you. MASA-0

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Windows 11's Windows Security App can't open.

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