1
Go into the Settings App - Personalisation - LockScreen
Set Background to picture and choose one
2
Open Windows Explorer.
Paste this into the address bar and press Enter
%USERPROFILE%\appData\Local\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets
Delete everything in the resulting folder
Paste this into the address bar and press Enter
%USERPROFILE%\AppData\Local \Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\Settings
Delete everything in the resulting folder
3
Then right click your Start Button, choose Powershell (admin)
Run (copy and Paste) this command and hit Enter
Get-AppxPackage -allusers *ContentDeliveryManager* | foreach {Add-AppxPackage "$($_.InstallLocation)\appxmanifest.xml" -DisableDevelopmentMode -register }
Restart your PC
4
Go into the Settings App - Personalisation - LockScreen
Set Background to Windows Spotlight