https://wccftech.com/windows-11-bug-some-apps-fail-to-work-expired-certificate/ > The Windows maker has confirmed that some Windows 11 users are experiencing problems with built-in apps in the new operating system where they fail to open or function properly. Microsoft said that it's happening due to a certificate issue. > In an update, the company added that this Windows 11 problem is being caused because of a Microsoft digital certificate that expired on October 31. The issue impacts the following: