Hi,
Could you please confirm operating system of the affected client.
Please note that Symantec only recommends using the CleanWipe tool as the final solution for removal of our product, the proper uninstallation steps should always be tried first.
If it's server operating system then we do recommend to follow manual steps to remove SEP.
Manual uninstallation documents for Symantec Endpoint Protection
http://www.symantec.com/business/support/index?page=content&id=TECH96924&locale=en_US