Hello, installed Win 10 Fall Creators Update with no issue. But after installing Avast 17.8.3705 (as well as earlier version), the start menu no longer works. This did not appear right away, it took a few hours before it to stop working. Uninstalling Avast, the problem is solved. Have seen many people reporting start menu issues on W10 FCU, but only a few attributed it to their AV (Panda, Avast, etc). Logging out then in, temporarily resolves it. Is this a known issue with Avast and W10 FCU in some systems?