The Symantec Endpoint Protection client Auto-Protect Backup Option must be disabled to prevent backing up infected files before attempting to repair them.

Potentially Unwanted Programs (PUPs) include Spyware, Adware, Remote Administration Tools, Dialers, Password Crackers, Jokes, and Key Loggers. While PUPs do not typically have any infection capability on their own, they rely on malware or other attach mechanisms to be installed onto target hosts, after which they will collect and transfer data from the host to an external host and/or will be used as attach mechanisms. Configuring the antivirus software to attempt to clean the file first will allow for the possibility of a false positive. If files are backed up before they are repaired, this could possibly allow the infection to stay on the system.