Symantec endpoint protection client not updating definitions

These clients are configured to receive their updates from their Symantec Endpoint Protection Manager (SEPM).The SEPM shows old virus definitions in "Admin Server Activity logs may provide details on the nature of the failure.If a client is not receiving updates automatically, follow this process.Managed Symantec Endpoint Protection (SEP) clients do not update virus definitions.From what I've read- Combo Fix isn't ready for Windows 8 yet so I'm unsure of what else to run. At the top of your post, click on the Watch Topic Button, select Immediate Notification, and click on Proceed. Traditional signature and heuristic file scanning engines form the backbone of Symantec’s security solutions; these engines use dozens of techniques to scan files for both known as well as unknown threats.Technologies designed to block attacks just as they transition from the network cable or wireless network to the computer, before they have a chance to establish residency in a physical file on a user’s computer. Behavioral-based protection technology observes actively running threats on your computer and can terminate running programs if they exhibit malicious behaviors; this technology provides proactive protection from entirely new, previously unseen attacks.


Yesterday the time in the system tray stopped updating, his video stops responding.. I KNOW it has to do with something he's done to the PC. But I've scanned it with the latest Spybot, Malwarebytes, and Microsoft Antiwpyware tools and found nothing. I've got Windows 8 on an identical machine and I have no trouble with mine so I know he's gone and corrupted or infected something. The owner has no discernment when downloading or running programs, spends a LOT of time on Facebook, etc. Symantec Endpoint is throwing error messages (has been prevented from running). His Excel doesn't detect that files have changed and just closes.


One possible cause is that old or corrupted virus definitions present on the SEPM prevent the SEPM's ability to update the SEP clients with new virus definitions.

I have a Windows 8 Professional machine that is acting very strange.


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