Endpoint Protection

I am working at a financial firm that has about 90 users.  We are running Symantec Endpoint Protection 11.0.5002.333.  I am having trouble with a couple users having their rtvscan.exe hog their computer as long as it is on.  It is not just at the initial startup of the computer, but as long as their computer is on it using upwards to 90% of the CPU.

The worst one I have been playing on is using Windows Vista.  I installed the registry key like what was given in the solution here : https://www-secure.symantec.com/connect/forums/rtvscanexe-high-memory-usage-sav#comment-3043241

This did not resolve my issue.  I did notice where someone said that the .dll file should be in the C:WINDOWS\System32 folder, but it is not.  It then said to search your computer to find it, then plug it in there, but it was not found anywhere on my computer.  So I guess I am wondering if anyone has the NavLogon.dll file I need or if that is even what is causing the problem.

Any help would be greatly appreciated!  I know this has been a common forum, but there has not been a solution to my problems.

Thanks!

It's a pretty old version with various bugs that have been corrected in later versions, you will want to upgrade to RU7 MP2 or SEP 12.1

Hey thanks for the reply, but we have LiveUpdate.  Would that not update it to the current version?  And if does not, I am not about to tell the CEO that we need to update our whole system because of a couple users.  That would not go over so well.

Sorry if I am reading wrong or misunderstanding.  Thanks for your help.

Do you have the option checked to download client patches in LiveUpdate?

Throw the Vista maybe?

Joking aside... when did you schedule full system scan? once per day?