Symantec AntiVirus - How to Unlock Manual Live Update

Environment
  • Symantec AntiVirus 10.X
Intorudction
Find users can't manual live update their Symantec AntiVirus. They need this as not in intranet sometime

Solution
Run "Symantec System Center" -> Select the server and then right click-> "All Tasks" -> "Symantec AntiVirus" -> Virus Definiton Manager" -> Just not click "Do not allow client to manually launch LiveUpdate"