After upgrading my Windows 8.1 to Windows 10 I started having issues with Metro apps and the Store. It was simply not working.
When trying to launch the Store app I was getting: "This app can't open. There's a problem with Store. Refreshing your PC might help fix it.".
SOLUTION
Right-click the start button, select "Command prompt (Admin)" and type wsreset.exe. Didn't work for me, I was getting: "You'll need a new app to open this ms-windows-store".
Right-click the start button, select "Command prompt (Admin)" and type powershell. Then type:
Code:Set-ExecutionPolicy Unrestricted
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TYPE: Y
and then copy and paste this:
Code:Add-AppxPackage -DisableDevelopmentMode -Register $Env:SystemRoot\WinStore\AppxManifest.XML
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but this didn't work at all. I got this errors:
Cannot find path 'C:\WINDOWS\WinStore\AppxManifest.XML' because it does not exist. bla bla bla
Possible Solution
Code:Set-ExecutionPolicy Unrestricted
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and then
Code:Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
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Finally, it worked.
If none of the above solutions works for you - create a new administrator user and repeat the steps under the new account. You will have to transfer all the existing data to the new user profile from the old one.