When C drive is full with antivirus cache,you may be wondering if it is possible to move to D drive or other available drives . The solution is No. It is not possible to move cache file even if you uninstall/ reinstall antivirus. It will still be in C drive. If system resources are insufficient, there is nothing much you can do except from upgrading system.

As interim solution, you may be able to housekeep some folders from following locations.

1. You can clear the folders from

C:\Program Files\Common Files\Symantec Shared\VirusDefs but leave the latest definition folders.

2. Delete all files/folders from

C:\Documents and Settings\All Users\Application Data\Symantec\LiveUpdate\Downloads