CCleaner Smart Clean Monitoring in CCleaner Help Requests Posted November 13, 2020 · Edited November 13, 2020 by mrmatt Hi, thanks for your reply. 'Run CCleaner when the computer starts' was already unchecked. I didn't realise 'Keep CCleaner updated automatically' might be causing the issue, so I've unchecked that now. I've still got 'Send notifications when there is a new version' checked though, or should I turn off that off too ? Actually, this time I booted it wasn't there, so it wasn't doing it every time. Your advice though seems as though it has probably cured it (after exiting CCleaner), but I'll keep an eye on it over the next day, and see what happens. Thanks once again.