VERIFIED SOLUTION i
Product Feature: Automate BPA
No connection between management and execution servers and Automate BPA agent is showing as red. Error in Event viewer: "Agent authentication of WIN-UD8OUGHM8GJ failed because your CAL count has been exceeded".
The license might have only one CAL. Even though the machine is not connected, it will still take up a client access license.
ResolutionUPDATED: November 29, 2017
Check that there is only one agent machine listed if the license only has one CAL. In Server Management console: Agents, there should only be one machine listed, on which the user want to use the Agent. Even though the machine is not connected, it will still take up a client access license.