On the LUA (LiveUpdate Administrator) the path "%ProgramData%\Symantec\LiveUpdate Administrator\Downloads" contains many files that are taking up a lot of disk space.
Can these files be deleted?
Release : LUA 2.x
This directory is the Download directory for the LUA, configured in the console under Configure > Preferences > Environment variables > Download directory. Default path is C:\ProgramData\Symantec\LiveUpdate Administrator\Downloads. It is used to download all updates as needed.
After updates are downloaded to this location, they are copied to the distribution servers as configured under Configure > Distribution Centers.
You can delete the contents of this folder, and updates will be downloaded again as needed. Note that you'll want to do it while a Download or Distribute schedule is NOT running to avoid errors.
Another alternative would be to move this location to a disk with more room (if feasible).