Windows 10, when I searched from the Start Menu or search icon, only (dead) Settings or Control Panel results appear with a result of "could not find....". For example, if I type "index option" or "control panel", the search results pull up the "Setting" gui and and the links were dead & unresponsive. When I created a new test user account, it had the same problem. All my attempts failed until I stumbled on this: This fixed my problem: Go to (OR search for a folder named "INDEXED"): C:\Users\USER_NAME\AppData\Local\Packages\windows.immersivecontrolpanel_cw5n1h2txyewy\LocalState => Indexed Right-click the Indexed folder > Properties > Advanced > Check Allow files in this folder to have indexed in addition to file properties. Click Apply and Exit. In my case, it was unchecked, I checked it > applied > that fixed it for me. Even if it is checked I would uncheck > apply > recheck > and apply it again. It instantly worked as a robust search tool and I rebuilt the index file after trimming it (35,000 items from 179,000). Hope this help someone!