Windows search function not working properly after windows 10 21H2 upgrade?
Or Windows system files get corrupted that results windows search function being unresponsive.
Check for and drop in the latest windows update, which should contain the bug fix for the problem.
Also, perform a Windowsclean bootthat should help to determine if any startup service causing the problem.
This will start detecting for problems that prevent windows search function properly.
Tick the box or boxes for the appropriate troubleshooting process you see.
Then click Next to continue, Restart windows after completing the troubleshooting process and test whether this helps.
Check Search function should work normally.
Run DISM restore health command and Perform a System File Checker and peek if it helps.
Create a new user account
This is another way to get rid of this problem.
Create a new user account following the steps below.
log off from the current user account and login with the newly created user account check this helps.