I found a fix. Regedit, then search for Windows Search. Click on SetupCompletedSuccessfully, and change the value to 1, save and close Registry. Then Control Panel/Indexing Options/Advanced and click Rebuild. This will take several hours, but you can use computer while it works. When it says it's complete, reboot, go back to Regedit SetupCompletedSuccessfully, and change the value to 0.
Indexing runs, completes, and then restarts and does it again.
Windows 8.1, Lenovo Carbon X1 20A7. The problem started for no reason I can think of. No new programs installed, no material changes. I ran System File Checker, CC Cleaner, Glary Utilities, and System Mechanic. No luck.
Windows for home | Previous Windows versions | Search, touch, and mouse
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Anonymous
2021-01-20T05:57:07+00:00 I do not recommend that you use any Registry Cleaners, Optimizers, Driver Updaters**,** Tune -Up utilities, etc.
And you should not use the Registry Tools in CCleaner
They may do more harm to your operating system than any good that they claim to be able to do.
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Run SFC 3 times.