Showing results for 
Show  only  | Search instead for 
Did you mean: 

Machine-agent installation - Unrecognized field "agentType"

New Poster

I'm receiving this error in agent log while configuring the machine-agent.

I've not been able to find any property for agent type at the agent side. Is this something to be changed at the controller end?


[system-thread-0] 11 May 2017 09:42:03,942 WARN RegistrationTask - Encountered error during registration. Will retry in 60 seconds.
The server experienced an unknown internal error. Please retry the operation, and if the problem persists, please contact support. (500 - UNKNOWN_INTERNAL_ERROR)
* Additional Info:java.lang.IllegalArgumentException: Unrecognized field "agentType" (class, not marked as ignorable (8 known properties: "installDirectory", "agentVersion", "machineInfo", "applicationNames", "tierName", "jvmInfo", "autoRegisterAgent", "nodeName"])
at [Source: N/A; line: -1, column: -1] (through reference chain:["agentType"])


AppDynamics Team (Retired)

Hi user, welcome in the AppD forum.


Is that a new installation? I'd check your controller version (click on the question mark on the top right corner and "about AppD") and check the agent version.

Agent versions should be lower than the controller's one.


Please let us know.



New Poster

Hi Jb,


Well, my controller version is AppDynamics Version, build 12.

Will an agent version work well or should I install agent version

AppDynamics Team (Retired)

No it's good like this.

Don't know why then.
Let's see if someone else has an idea

New Poster

It did work with agent version same as my controller. Thanks!