Microsoft has just made a pretty remarkable admission, essentially conceding that it doesn’t have a solution for some Windows 11 problems. As Neowin reports, some people using Windows 11 and Windows 10 have found a bug which prevents the Start menu, Windows search bar and some Universal Windows Platform (UWP) apps from starting or working correctly. It appears that the bugs coincide with damaged registry keys and data related to Microsoft Office apps, and apps that are integrated with Office software, as well as Windows and Outlook.