Bumped into a very annoying issue of an unstable SCOM 2012 SP1 Management Group.
After some deep investigations I thought to have found the issue. But still it didn’t feel right. Some readers left good comments and besides that, the Management Group was far from stable. Resource Pools were highly unstable.
Yesterday we (a colleague of mine and me) took a deep dive but at the end of the day no results. Still the same issue at hand.
The REAL cause…
This morning I had a bright moment. I knew an additional SCOM 2012 SP1 Management Server was added to the Management Group and the issues started from that moment on. Everything was in place on that server like certificates, X-plat certificates as well and so on.
BUT… how about Anti-virus exclusions?! Yes, the default ones were in place but NOT the SCOM 2012 related ones! As soon as those exclusions were arranged, the SCOM 2012 SP1 Management Group became healthy again and all is working like a charm.
Conclusion
Whenever your SCOM environment shows erratic behavior and SCOM itself seems to be configured properly and by the book, check for GPOs running on those SCOM Management Servers / -Agents AND check for the anti-virus exclusions required by SCOM as described in KB975931.
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