CCleaner handling of Microsoft Security Essentials in CCleaner Bug Reporting Posted July 5, 2013 I actually liked having the means to use ccleaner to remove some of those logs and scans. This sounds like one of those requests you read about over in the avast! threads. You need to know what your av is doing and have the means to clean it up. It didn't hurt anything having the mse option. All you have to do is update and scan and the warnings go away. Another great example of the old he who sacrifices liberty for safety will have neither gag brought courtesy of the fear mongering and then because of this those of us who find it useful are at their mercy.