Simple solution
Works for Windows 8 (8.0 or 8.1) and Windows 10
From:
http://blogs.technet.com/b/ouc1too/archive/2013/10/19/windows-app-store-doesn-t-load-after-8-1-upgrade.aspxCopy Paste:
Open a Command Prompt as an Administrator.
In the Administrator Command Prompt
type or paste the following command:
powershell -ExecutionPolicy Unrestricted Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRoot\WinStore\AppxManifest.xml
hit Enter.
Now in that same Administrator Command Prompt type or paste:
start "" "ms-windows-store:"
Voila. Enjoy installing some new Store apps.
Update 10/2/2014 – I’ve had several users contact me that this also works when testing the Windows 10 Technical Preview which you can get here - Windows 10 Technical Preview
I’ve tested these steps this morning, and they do appear to be the same in Windows 10.
not working, fix, Powershell, Windows 8.1, add-appxpackage, Store, ms-windows-store, ExecutionPolicy, Microsoft, Apps, app, Windows 10 upgrade, Windows 10, Windows 8