Cleaner gets deleted in CCleaner Bug Reporting Posted 22 hours ago · Report reply If you are downlodading to the standard location ("C:\ProgramFiles\CCleaner\") then that sounds as if your Anti-Virus is removing /quarantining it, check your Anti-Virus logs to see if this is the case. v5.63 was given a new security certificate and the old certificate revoked - some AV's have yet have to update their allow lists. So they are still looking for the old certificate, and when they don't find it they will remove CC because they think it has the wrong certificate. If it is your AV doing it then try doing a manual update of your AV definitions to make sure you have the latest. If that still doesn't cure it you could make "C:\ProgramFiles\CCleaner\" an exception in your AV which should then leave it alone.