Symptoms:

   Recently RabbitMQ is installed without granted users, in order to connect Zerto to vCD you will have to create user manually.    

Cause:

   An administrator may need to create RabbitMQ user for his/her cloud environment.    

Solution:

Prerequisites: Erlang + RabbitMQ installed.
1. Log in to the VM RabbitMQ is installed on.
2. Open RabbitMQ Command Prompt.
3. Run the following commands:
A. rabbitmqctl add_user <username> <password> (That syntax will create a new user.)
B. rabbitmqctl set_user_tags <username> administrator (That syntax will make the user an administrator)
C. rabbitmqctl set_permissions -p / <username> ".*' ".*" ".*" (That syntax will set permissions for the user, the "/" stands for the v-host, by default set to "/")