RADIUS - Packet does not contain required Message-Authenticator attribute

Hi everyone,

We are configuring a CyberArk as a RADIUS Client for authentication against Advanced Authentication RADIUS server.

After some initial tests, we are getting this error message:

“Error: Receive - Insecure packet from host 10.99.132.66:  Packet does not contain required Message-Authenticator attribute.  You may need to set "require_message_authenticator = no" in the configuration”

Does anybody know how this can be set in Radius configuration within the Advanced Authentication server?

Thank you in advance,