How to re-register Microsoft Store apps with PowerShell

When many apps fail at once (Start, Settings, Calculator, Photos), register every package of your account in one go. Close all apps first and run this in the same normal PowerShell window:

Get-AppxPackage | ForEach-Object { Add-AppxPackage -Path "$($_.InstallLocation)\AppxManifest.xml" -Register -DisableDevelopmentMode }

Wait until the prompt returns, then restart the PC.

With the command for all apps, some packages always print red text. Two errors mean only that the package was left as it is:

Other errors, for example 0x80073CF6 (the package cannot be registered) or 0x80073CF9 (install failed), point to a real problem with that package. Note the package name in the red text, repair system files with Run DISM and SFC to repair Windows system files and run the command for that one app again.

• The app is not on the PC. If Get-AppxPackage prints nothing for the app, there is nothing to register. Install it from Microsoft Store, or see Reset the Microsoft Store when the Store itself is broken.
• One app misbehaves. Repair or reset it first: How to repair or reset an app in Windows. Use the command for all apps only when several fail together.
• The Start menu package is missing for every user. Microsoft does not support installing the Start menu files by hand and calls the results unreliable. Go back to a working state with Undo recent changes with System Restore or Reinstall Windows without losing files.
• A work or school PC. Apps there are often managed by the organization. Ask your administrator.

There is nothing to undo. The commands do not download, remove or reset anything: they register again the packages that are already on the disk. Apps you removed earlier do not come back.