Why might a new delivery controller fail to accept a license code during setup?

A new delivery controller might fail to accept a license code during setup if a firewall is blocking the port on the license server. Successful communication between the delivery controller and the license server is crucial during the installation process, as the delivery controller needs to reach out to the license server to validate or retrieve the licensing information. If a firewall is configured to block the specific port that the license server uses for communication, the delivery controller will not be able to connect to the license server to verify the code, resulting in a failure to accept the license code.

This scenario underscores the importance of network configuration and firewall settings in cloud environments and IT infrastructure. For instance, administrators must ensure that any necessary ports are open, allowing seamless connectivity for services that depend on licensing and other critical communication processes.

Other potential situations like having an incompatible license version, unsupported license for clusters, or license expiration can contribute to issues during setup, but they represent different troubleshooting paths where network connectivity remains essential.