When you install a vRealize Operation Endpoint Agent and then check status of Agent You will see similar message on screen: “Agent not yet setup”
You can check status of agent if you browse by CMD (run as administrator) the agent’s folder (default on Windows it is “C:\ep-agent\”) and go “bin” folder.
There are two files. In Windows environment you can select “ep-agent.bat” and write after that “status” command as you can see in picture below.

Start and stop agent or restart the agent follow the commands below:
“c:\ep-agent\bin\ep-agent.bat stop”
“c:\ep-agent\bin\ep-agent.bat start”
or
“c:\ep-agent\bin\ep-agent.bat restart”

End of process you will see this message: “Unable to register the agent due to server error.”
Login to Node (in this case we use Remote Collector) by SSH and go
“cd /storage/log/vcops/log/adapters/EndPointAdapter/”
In this folder you can find logs of End Point Adapter: EndPointAdapter_XXX.log

If you don’t confort with command line, you can find this log on vRealize Operation UI under “Administration/Support/Logs”
Open Node or Remote collector and browse this path: “Collector/Adapters/EndPointAdapters/EndPointAdapter_148.log”
Double click the log file and top of the logs click narrow next “Word Wrap”
Fill the “Search For” option by failed or ERROR text and hit enter.

2020-01-23 15:30:58,570 ERROR [http-nio-127.0.0.1-8877-exec-2] (148) com.vmware.vcops.aim.agent.webserver.AgentAdapterController.handleCommand – Error when executing the agent command REGISTERAGENT Token:1579787033467-1288668644369240284-1905636990515871091. Failed to create agent instance. Reason:Failed to create resource: message=ResourceKind is not found: {adKind=EP Ops Adapter, resKind=EP Ops Agent}, localizedMessage=ResourceKind is not found: {adKind=EP Ops Adapter, resKind=EP Ops Agent}, code=0; message=resourceKind is null for resourceKind Key: EP Ops Agent and adapterKind Key: EP Ops Adapter, code=0 [905] com.vmware.vcops.aim.exception.AgentAdapterException: Token:1579787033467-1288668644369240284-1905636990515871091. Failed to create agent instance. Reason:Failed to create resource: message=ResourceKind is not found: {adKind=EP Ops Adapter, resKind=EP Ops Agent}, localizedMessage=ResourceKind is not found: {adKind=EP Ops Adapter, resKind=EP Ops Agent}, code=0; message=resourceKind is null for resourceKind Key: EP Ops Agent and adapterKind Key: EP Ops Adapter, code=0
Fortunately the solution is really simple, just enable Operating Systems solution in vRealize Operation 🙂
“Administration/Solutions/” under Native management packs

great article. this helped me immensely
Thank you, I’m happy to help U 🙂
Thanks so much for this. I re-installed vROps and forgot to re-activate the OS Module. What an idiot. The VROps error message is _less_ than helpful 🙂
Your welcome, I really happy that help to you! I did same that was the reaseon of this article 😀