Hi Friends,
In this blog i have added some Troubleshooting Articles which can help to Repairing the Corrupted Definition
How to clear corrupt Virus Definitions from SEPM https://www-secure.symantec.com/connect/articles/how-clear-corrupt-virus-definitions-sepm
Using the "Rx4DefsSEP" utility http://www.symantec.com/docs/TECH93036
Using the "Rx4Defs64" utility http://www.symantec.com/docs/TECH105038
Drive Space used by Virus Definitions Updates http://www.symantec.com/docs/TECH141811
Disk Space Management procedures for the Symantec Endpoint Protection Manager http://www.symantec.com/docs/TECH96214
How to Backdate Virus Definitions in Symantec Endpoint Protection Manager http://www.symantec.com/docs/TECH102935
Symantec Endpoint Protection Manager (SEPM) 12.1 is not updating 32 or 64 bit virus definitions. http://www.symantec.com/docs/TECH166923
How to update definitions for Symantec Endpoint Protection Manager (SEPM) using a .jdb file http://www.symantec.com/docs/TECH102607
Script to download Definitions from SEPM https://www-secure.symantec.com/connect/downloads/script-download-definitions-sepm
How to create a client installation settings to delete previous logs, policies and reset the client-server communication settings? http://www.symantec.com/docs/TECH93617
Symantec Endpoint Protection: LiveUpdate Troubleshooting Flowchart http://www.symantec.com/docs/TECH95790
Only 32 Bit Antivirus / Antispyware Definitions are not updating on the 32 Bit / 64 Bit Operating System. http://www.symantec.com/docs/TECH122857
How to determine if virus definitions of Symantec Endpoint Protection client (SEP) 11 or 12 Small Business Edition, are corrupted http://www.symantec.com/docs/TECH97677
Potential Symantec Endpoint Protection content definition corruption http://www.symantec.com/docs/TECH92043
Remove Virus Definitions https://www-secure.symantec.com/connect/downloads/remove-virus-definitions
Symantec Endpoint Protection 12.1: How to roll back the BASH definitions to a known good version http://www.symantec.com/docs/HOWTO53366
How to update definitions for Symantec Endpoint Protection using the Intelligent Updater http://www.symantec.com/docs/TECH102606
How to clear out definitions for a Symantec Endpoint Protection 12.1 client manually http://www.symantec.com/docs/HOWTO59193
Symantec Endpoint Protection (SEP) 12.1 client is maintaining multiple virus definitions versions on servers. http://www.symantec.com/docs/TECH180056
Hope these are helpful.
Thanks
Sumit G.
Thank you for compiling this list. Very comprehensive and thorough.