Open Start, type: powershell
Right click PowerShell
Click Run as administrator
At the command prompt, type the following then hit Enter:
Get-AppXPackage *WindowsStore* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}
Exit Powershell then restart.
Check if you can open the Store.