"You'll need a new app to open this windowsdefender link" fix

Anonymous
2022-02-09T15:04:00+00:00

Hi this post is to help people with windows 10 and 11 windows security not working

On windows 11 do this

  1. launch powershell as an admin
  2. Set-ExecutionPolicy Unrestricted
  3. Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
  4. Set-ExecutionPolicy restricted

IGNORE THE ERRORS

on windows 10 do this

  1. launch powershell as an admin}
  2. run get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
  3. if it doesn't work do this
    4) run Add-AppxPackage -Register -DisableDevelopmentMode "C:\Windows\SystemApps\Microsoft.Windows.SecHealthUI_cw5n1h2txyewy\AppXManifest.xml"
  4. run get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
Windows for home | Windows 11 | Performance and system failures

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  1. Anonymous
    2022-06-10T15:10:11+00:00

    I tried this successfully on my desktop, but on the MS Surface Pro 7 upgraded to W11 it ran then stopped before the end ... see screenshot

    I ran this several times ... always stopped at the same point

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  2. Anonymous
    2022-04-29T03:58:27+00:00

    This worked liked a charm for me after trying for several days. Windows defender, windows security center, and few other apps came magically back after following TrippCollins advice. I think I caused the issue trying to delete bloatware and messing with the wrong program. Thank You sir! This computer is a month old.

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  3. Anonymous
    2022-04-26T22:03:06+00:00

    Thank you so much kind stranger.

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  5. Anonymous
    2022-04-12T12:47:51+00:00

    Thank you! Your solution for Windows 11 solved the problem for me.

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