I want to launch CCleaner at the end of my browsing session, but it won't launch. I re-installed yesterday, and it worked. but today, it won't. Is anyone else experiencing this problem? Windows 10, 1TB SSHD, 12 GB Ram.
Are you using free or pro ccleaner?
I'm having the same issue - free version. I tried updating, then reinstalling and no luck.
What anti virus are you using?
Trend Micro
Another user reports that once Trend Micro is updated to 2020 then CCleaner works as expected again.
https://community.ccleaner.com/topic/57718-ccleaner-not-opening/?tab=comments#comment-317551
Updating Trend Micro from within Trend Micro itself will tell you that you are up to date - but you may not be.
You may have the 2018 or 2019 versions of TM, so while that is up to date itself - it is not the latest TM version.
You may need to download and install the TM 2020 upgrade - go to this page to 'grab' the 2020 upgrade.
https://esupport.trendmicro.com/en-us/home/pages/technical-support/maximum-security/home.aspx