Steps to ON and Off the Liveupdate
1) It is advisable to backup the registry before editing.
2) Click Start > Run > Regedit.
3) In the Registry Editor go to HKEY_LOCAL_MACHINE\SOFTWARE\SYMANTEC\SYMANTEC ENDPOINT PROTECTION\LIVEUPDATE.
4) In the right pane, locate the String Value “AllowManualLiveUpdate”.
5) Double click on the string value and change the Value data to zero.
6) Close the editor.
7) If the String Value “AllowManualLiveUpdate” is not present the you need to create it and you can do this by right clicking in a blank area of the pane and click on New and choose DWORD Value.
8) Name the new value “AllowManualLiveUpdate” ,without the quote marks, you can leave the
default value of zero and this will disable the LiveUpdate button on the SEP client GUI. (Note: To Turn ON default value of 1)
9) Close the Registry editor.
10) Open the SEP client GUI and verify that the LiveUpdate button is disabled.