Hi,
I have done quite a bunch of research for this issue. Could not find a solution what to do?
I am a beginner-intermediate level in SCOM so please bear me.
My Environment:
SCOM ver: 1807
OS: Windows Server 2016
All other clients are functioning and reporting normally. All clients are domain joined and I have 30 clients on the same subnet.
ISSUE:
Recently one of my SCOM client had some issue(OS) and Agent was uninstalled manually and the server was deleted from the SCOM console>>agent managed.
Now the client is back online and I have installed (pushed agent from the SCOM console) and agent is installed successfully.
However in SCOM console the client appeared in Pending Management and the approve button is grayed out, I can only reject the server.
I have tried install/uninstall/manual install with the same result.
To test out if this issue was with this client only, I took another client which was perfectly working with SCOM, uninstalled agent from console and then reinstalled agent but got the same issue and now I have 2 clients that are in pending management.
Digging into and following the forum, in the event viewer of the client I can see event id 20070
"The OpsMgr Connector connected to (FQDN server name), but the connection was closed immediately after authentication occurred. The most likely cause of this error is that the agent is not authorized to communicate with the server, or the
server has not received configuration. Check the event log on the server for the presence of 20000 events, indicating that agents which are not approved are attempting to connect."
However there is no event ID 20000 in the SCOM server.
I have verified the server and client can communicate with FQDN and the ports are open for communication.
I have seen talks of certificate on forum but have no idea how to troubleshoot, but checked in HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft
Operations Manager\3.0\Machine Settings location and did not find anything.
Can anybody show me light to the right path.
Thanks in Advance.
Suman