I am finding that the Windows 10 app search function periodically stops working. I haven't got Cortana enabled and am not signed in with an account; just using a local account. To clarify, I am talking about the bar to the right of the Start menu that says 'Search the web and Windows'. When I first boot up, I can type app names etc into there and it finds stuff - for example, typing in cmd returns results for command prompt as expected. This works OK for a few searches and then appears to stop working - then when I type something in. I get the flashing blue dot animation at the top suggesting it is doing something but no results are returned. Rebooting the machine fixes it briefly and then it breaks again.