For a while now, I've been having issues with WMI and DCOM rendering OpManager only half as good as it was before.  From my OpManager server, I am unable to authenticate to any other server on my network so none of my stats including memory and CPU usage, SQL information, etc. are showing up on any of the systems in OpManager.  I've had several support requests but have yet to find a solution so I'm reaching out to everyone to see if anyone else has any ideas.  The specific error I receive is "A security specific error has occurred" and this shows when trying to use WMI through OpManager.  Here are the steps I've taken to try and resolve this:

• Disabling the firewall completely
• Checking DNS for errors
• Tried different accounts including other Domain Admins
• Tested on unpatched computers with no AV and no Firewall
• Checked for GPOs that can block these services
• Assured DCOM, WMI and RPC are running

Thanks so much.