Hello,
I am running SCOM 2012 R2. All of my clients were re-imaged (Over 500) during the summer. Each image that was created had the SCOM 2012 R2 Agent installed. The images were installed on all of my clients. Now, most of the clients are listed as greyed out or not monitored. The server has Event Log entries of the following:
Operations Manager has received a connection from a system running an older version of Operations Manager
None of my clients are running an older version of the agent. What's also new is that I cannot tell if my clients are turned on or not. The clients that are green are always green. Even when they are powered off, they are never grey in the console. Even after I ping them or refresh. They always stay green. Any help would be appreciated.