This video will show you how to fix Windows 10 Store Unknown layout specified in manifest.
1. Check the date and time settings
If the region & language isn’t set correctly, you can get the "Something bad happened. Unknown layout specified in manifest" error message. So, make sure they’re correct.
2. Reset the Windows Store app
Get-AppXPackage WindowsStore -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}