Solution:
Root Cause: Corrupted AppX Manifest or Package Registration
When Copilot refuses to open or crashes immediately on launch, the local UWP/AppX manifest files are corrupted or registered incorrectly in the active user profile.
Step-by-Step Fix:
1.Completely Remove Corrupted Package via PowerShell:
Right-click the Start Button and select Terminal (Admin) or Windows PowerShell (Admin).Run the following command to remove existing Copilot installation packages: powershell
Get-AppxPackage -Name *Copilot* | Remove-AppxPackage -AllUsers
2.Re-register Built-in AppX Dependencies:
Execute the following command in PowerShell to re-register native app packages: powershell
Get-AppxPackage -AllUsers -Name *Microsoft.Copilot* | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
3.Reinstall from Microsoft Store:
If the app is entirely missing after package cleanup, download a fresh installer directly from the official Microsoft Store Copilot App Page.Launch the installed package and restart your computer.