About a month ago, the Virus Definition File version date stopped updating and hasn't updated since - 3/26/2012 rev. The automatic update has continued to run everyday, downloading the latest definitions, but not updating the version date in the client. Sometimes it downloads an update successfully and other times it says the virus definitions are up to date.
These resource-intensive processes may cause the upgrade to take significantly longer than previous upgrades.
The extended length of time that the upgrade process requires is normal and to be expected. See The Live Update content optimization and content storage space optimization steps take a long time to complete when upgrading to Symantec Endpoint Protection Manager 12.1 RU5.
If a client is not receiving updates automatically, follow this process.
I'm keeping tabs on a remote sever that is running Symantec Anti Virus Corporate Server 10.1.7.7001.
I don't think it is an issue of getting the virus definition. Well, first of all - this site is really not a substitute for the Symantec's techsupport.
If you have a support contract with them - I really suggest you contact them instead.
This article provides best practices for upgrading to the latest version of Symantec Endpoint Protection (SEP) 12.1.x. Note: For more information on upgrading to version 14, see Upgrade best practices for Endpoint Protection 14.
The following resources will help to plan and perform an optimal upgrade from previous versions of Symantec Endpoint Protection (SEP) to the current version, while following the recommended best practices and being aware of any potential issues and risks.
The upgrade process converts all existing content to the optimized storage format.
Live Update also runs to obtain the most current content revisions.
You can also update content on Symantec Endpoint Protection Manager with a file.