Hi VJware,
Thanks for your reply.
Is BE 2010 R3 and the remote agent completely patched up ?
-> Yes.
https://support.symantec.com/en_US/article.TECH136185.html
-> Patch 980794 is not applicable to our system.
-> Had tried ExcludedBinaryPaths, but not working.
https://support.symantec.com/en_US/article.TECH129238.html
-> Does not find it helpful.
Also, assign a drive letter to the system reserved partition and try again.
-> What do you mean?
Unable to test wbadmin as the feature is not enable.
However, I don't have any problem backing up the system state on other servers running the same OS version. Weird?