I've read past threads and the advice given was that Returnil should not be used in isolation with Sandboxie, or vice versa. However, I still don't quite understand what this means. 1. Let's say if I'm using Returnil Free, since it'll revert everything on my C drive back to its original state, why use Sandboxie to sandbox firefox then? After all, Firefox is stored under C drive and everything will be deleted later on. Also, I save my downloads in my data partition (D drive), so it won't be affected by the deletion. Is it because the downloads I saved into my D drive might be infected, and Returnil can do nothing about it.. which Sandboxie can? Which means... Rebooting will only clear the damage malware creates to the C drive, but not to D drive. 2. And, when using Returnil, how often do you'll update your AV, OS and other security software? Boot into Safe Mode weekly to do so? 3. If you were to game, will you on Returnil's protection? Cuz u won't be able to save your game. Or, would you install the game in another partition, so that it will be unaffected by Returnil? 4. I also realised that when I'm using firefox and the pc crashes, the session manager is unable to save the session, when I choose to save the session in D drive or Returnil drive. But, when Returnil's not running and firefox saves to C drive, the session manager works when the pc crashes. 5. Lastly, would you consider windows steadystate a good alternative to Returnil Free? Sorry for the rather long post.