Ccleaner freezing up

When I run the Cleaner, it freezes up and I get a security error message when it is analyzing Windows system temporary files. I just downloaded the newest version yesterday.

Windows version?

CC version?

Anti-virus software?

Error message given?

Was it working with the previous CC version or are you a first time user?

Something to try; run CC with the PC in Safe Mode. That often clears whatever hurdle CC has then it can be run normally.

You say it happens when you just analyze (as opposed to during cleaning process when most issues like this occur)