Hey, iv'e had tons of problems trying to get minecraft to work. It started of with me not being able to download it, the download always stopped at 90% then an error occured. After tons on research into how to fix this problem and days of talking to minecraft support I finally found a solution. I put what I think is this code into powershell:

PowerShell -ExecutionPolicy Unrestricted –Command “& {$manifest = (Get-AppxPackage Microsoft.WindowsStore).InstallLocation + ‘AppxManifest.xml’ ; Add-AppxPackage -DisableDevelopmentMode -Register $manifest}”

Or this code:

Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

Then it finally downloaded properly, both from the windows store, the xbox app and the actual minecraft launcher itself. However now I can't open the game. When I click run I can sometimes see the red startup screen that says mojang, then it just closes itself. I don't know what else to do now, hope all this info is enough.