Here's the scenario:
Have 20+ domain controllers and from version 11 we upgrade them to 12.1 RU2.
One week or so, those regional servers started to cause a problem causing the users not to authenticate using their accounts as the event logs shows that the non-paged memory pool run out of allocated memory. As per checking, the servers cannot be mapped or browse the internet.. This happens to all domain controllers and stil lucky that it still not reaching the data center which will cause a lot of problem. Symantec Support says it is not cause by symantec? How would I know? because it never ever happened before until we upgrade those servers to 12.1 RU2. BTW, I provided the symantec Support a Symhelp.exe logs to check what causes the issue? Suggested to upgrade again to 12.1 RU3, but will it surely resolve the problem here?
Please help me as I'm still looking for another solution. This is not acceptable to the client and must be proactive monitoring the servers.
Thanks!
Ren