"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
    2022-05-12T03:00:50+00:00

    I had to reinstall Win 11 Pro to fix the issue.

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  2. Anonymous
    2022-05-12T03:54:05+00:00

    Thank you! This did the trick for me! FWIW, I was logged in as an administrator user and ran in an admin command prompt.

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  3. Anonymous
    2022-05-15T18:06:36+00:00

    Worked well for me. It takes time to complete... patiently wait until the command line prompt C:\WINDOWS\system32> is displayed.

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  4. Anonymous
    2022-05-17T02:05:06+00:00

    this worked, thanks

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  5. Anonymous
    2022-05-17T07:20:48+00:00

    Tripp - this is what I see on Win11 when I start the procedure:

    PS C:\WINDOWS\system32> Set-ExecutionPolicy Unrestricted

    Execution Policy Change

    The execution policy helps protect you from scripts that you do not trust. Changing the execution policy might expose

    you to the security risks described in the about_Execution_Policies help topic at

    https:/go.microsoft.com/fwlink/?LinkID=135170. Do you want to change the execution policy?

    [Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "N"):

    I assume that I should reply Y or A, but would appreciate it if you could provide a complete answer for us dummies who want to make sure that we don't mess anything up trying to fix this bug.

    Thanks!

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    4 people found this answer helpful.
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