If the search doesn’t work only in the Windows 10 Start menu, try the following solution: If the search from the Windows 10 Taskbar does not work, try to restart this process: The Cortana process ( SearchUI.exe) is responsible for the search from the Taskbar.

Blank Windows Search Result on Windows 10 with Bing Search Integration.Re-Register Universal Apps in Windows 10.Run the Search and Indexing Troubleshooter.Check the Search Service and Indexing Settings.Windows 10 Start Menu Search Not Working.