Methods and systems for registering a management controller of a data processing system with a new message broker are disclosed. The management controller may be previously registered with an existing message broker. A server may provide a certificate for the data processing system to the new message broker and the server may notify the management controller that the registration process has been initiated. In response, hardware resources of the management controller may provide a registration request to the new message broker. The new message broker may provide a challenge to the management controller via an out of band communication channel and the management controller may provide a challenge response also via the out of band communication channel. Doing so may complete the registration of the management controller with the new message broker. The server may then un-enroll the management controller from the existing message broker.