After months of normal operation on my Win 7-64 PC, TiVo Desktop 2.8.3 started weird behavior about the time Win 10 installed itself and I uninstalled it. The main symptoms were: TiVo tray icon randomly disappeared, TiVo Desktop randomly locked up (required Task Manager to shut it down), automatic downloads were unreliable, and TiVo portable conversions randomly quit part way through. A normal reinstall or "control-panel/uninstall/repair" restored normal operation, but only for minutes or a few hours. There may have been other factors (like many MS updates) but the fix appears to be in following these instructions from TiVo. The main trick seemed to be running both the Cleaner Utility program and the new Desktop Installer as administrator (i.e. Run as Administrator). Previous installs from an administrator account (but not run as administrator) never did the trick. The other thing is that I had trouble linking to my TiVo account. Being actually logged into my TiVo account (while trying to link) seemed to help. I saw an article that said to use all caps for username part of the email address but I don't know of that worked or not; I lost track of all the upper/lower case permutations I tried.