Endpoint Protection

I've upgraded almost 600 machines to 11.0.6100.645 and almost all are uneventful.

I have three Windows 2003 servers which locked up hard on the upgrade from 11.0.5 to 11.0.6000 as well as 11.0.6100..    This is using the automatic routines for client update from SEPM.   The clients run AV only, no other component.

As the upgrade progresses, the server gets slower and slower.    Network eventually dies off.   Task manager quits working.   net start fails to complete.   Eventually the server just locks up, except for mouse movement.

I've had to "clean" remove Symantec to get things working agian on some servers as the uninstall locks up too.   The common things are these are all 2003 servers running Microsoft DPM.       My 2008 R2 Exchange servers running 11.0.6000 didn't have problems going to build 6100.

Anyone else seeing anything similar?

Have not heard of an issue of SEP with Microsoft DPM. After from Microsoft DPM  do you know what else is diffrent on this server?

What components of SEP is installed on it?

Are these servers running as GUP's?

https://www-secure.symantec.com/connect/forums/symantec-endpoint-protection-and-microsoft-data-protection-manager#comment-4160601

These are all Windows 2003 servers with the last SP.  32BIT.  Some R2 some not.   They have Microsoft DPM, Backup Exec Remote Agent, and Symantec EndPoint.   They all locked up while installing 11.0.6100.645 all in the same way.   None of these are GUPs.  One was at one time long ago, but is not now.

We have both Dell and HP hardware in this mix, so it's likely not the hardware.   More likely a conflict in some software.

Nearly 600 other machines updated without this problem.

I would suggest you to contact Support and log a case for the issue.