If this happens to you, there are two easy ways to fix it when Windows Spotlight stops working. This includes running a command in Powershell to reset the feature or clearing the system files to force the service to reinitialize the next time you restart the computer.
Causes of Windows Spotlight Not Working
There are a couple of things that may cause Windows Spotlight to stop working.
Occasionally, a Windows Update crashes the service and stops it from loading new Bing images for the lock screen background. In other cases, either image files or the Windows Spotlight system files become corrupt. This may cause the service to crash or freeze.
How to Fix Windows Spotlight Not Working
Work through the following steps to have the Windows Spotlight feature working again. Once this is finished, change the Personalization setting you changed above back to Windows Spotlight. Restart the computer, then check if Windows Spotlight works. Rename the settings.dat and roaming.lock files by adding .bak to the end of the files. Once finished, restart the computer and test to see if Windows Spotlight works again. Select all of the files and delete them. Restart the computer and check if Windows Spotlight is working.
