After the upgrade from Windows 8 to Windows 8.1, your Store app might stop working properly. When you launch it, it may hang or get stuck at the loading circle animation, from which it never proceeds to the actual Store. Also, the PC Settings app may be broken too. Fortunately, it is possible to fix the problem easily. Let's see how.
- Open PowerShell as Administrator: type powershell on the Start screen. The PowerShell icon will appear in the search results on the right. Right click it and choose "Run as Administrator".
- Type (or copy-paste) the following command into the PowerShell console:
Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRoot\WinStore\AppxManifest.XML
Press Enter and wait until the command is finished. It should take a few seconds.
- Reboot your PC
That's it. Now your Windows Store should work again.
For repairing the PC Settings app, the command is similar. Repeat the above steps but instead of the command in step 2, type this command:
Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRoot\ImmersiveControlPanel\AppxManifest.XML
That's it. Now your PC Settings app should also be repaired.