Recently we had issue with SCOM gateway server where frequently SCOM gateway was getting grayed out.below are the below steps to troubleshoot the issue.
- Check the gateway server operation manager logs.As you know logs will give you complete detail and help you to troubleshoot.
- Check the pattern how frequently your gateway going grayed out.
- Check the authentication certificate and firewall port between gateway and management server.
In my case there no network issue.I was able to telnet 5723 port from gateway server to management server.Health service was running without any issue.I opened the operation logs and found 4506 error.After validating the SCOM gateway logs looks like data is dropping due to outstanding data.They had recently installed the Mcafee anti virus on the gateway server and because of that gateway was getting grayed out frequently.
This event logs usually comes when anti virus is scanning the SCOM agent directory.
Please exclude below directory on Gateway server rom Mcafee antivirus scan to resolve the issue.
C:\Program Files\System Center Operations Manager
C:\Program Files\System Center Operations Manager 2012
Note: Directory can be differ based on the directory selection during agent installation.