1. Start Menu -> Computer Management -> Service and Application -> Service
2. Find "Background Intelligence Transfer Service" -> Property -> Set Automatic
3. Personalize -> Lock Screen -> Set "Picture"
4. Navigate to target directory in file navigator
%LOCALAPPDATA%\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\Settings
5. Delete Settings.data
6. Go back to parent path -> LocalState folder-> Assets folder -> Delete all files (spotlight files)
7. Personalize -> Lock Screen -> Set "Windows Spotlight"
8. Wait a second, we could see the files be downloaded to Settings folder and Assets folder