To fix “windowsdefender link” error in Windows 11, use these steps:
Open Windows PowerShell from search or Start Menu with administrator privilege.
Copy and paste Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
Close PowerShell window.
Once done, you’ll be able to launch Windows Security app again.
Reference: Please refer this page for more details.
Go to more solutions & Tools
Open Windows Security from Command
Windows Security Page Command
Home start windowsdefender:
Virus & threat protection start windowsdefender:threat
Account protection start windowsdefender:account
Firewall & network protection start windowsdefender:network
App & browser control start windowsdefender:appbrowser
Device security start windowsdefender:devicesecurity
Device performance & health start windowsdefender:perfhealth
Family options start windowsdefender:family
Protection history start windowsdefender:history
Security providers start windowsdefender:providers
Notifications start windowsdefender:settings