
Fix Windows Search 404 Error by Rebuilding the Index
When Windows Search throws a "404 error" or returns no results, the search index is often corrupt...

When Windows Search throws a "404 error" or returns no results, the search index is often corrupt...

You open File Explorer, type a filename or keyword into the search box, and nothing happens — or ...

If you see an error like "The port is already allocated" when trying to install or updat...

You try to send or receive email in Outlook and get a network error. The error may say something ...

When Chrome shows "permission denied" for your camera, it usually means the browser or system isn...

If you see Windows Defender error 504, it usually means the security service can't connect or upd...