"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
    2022-04-26T22:03:06+00:00

    Thank you so much kind stranger.

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  2. Anonymous
    2022-04-26T14:17:15+00:00

    This worked. And I found an answer on the Microsoft help forums. You seem to know a thing or two - they should hire you instead of their previous...interesting....tech support folks.

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  4. Anonymous
    2022-04-16T13:53:53+00:00

    I had this same problem. Admin account and standard account on the PC - logged in as standard user, running powershell as admin. The above instructions did not work. No change.

    I turned my standard user account into an admin (computer management, users & groups, users, user account's properties, "member of" tab, added Administrators). Restarted and reran the above instructions while logged in as that user who is now an admin. That worked.

    I haven't removed the user from the admin group yet, but I'm hoping the fix will continue to work.

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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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