You have installed the CWP Agent and are getting error code 19, enrollment with the server failed.
Error code 19, enrollment with the server failed
CWP firewall requirements: https://help.symantec.com/cs/SCWP/SCWP/v121465361_v111037498/Firewall-requirements?locale=EN_US
Ensure the machine is able to reach the following URL's
Symantec security cloud portal endpoint for the agents to communicate with the Symantec cloud server.
Symantec cloud API gateway for the agents to upload its events to the Symantec cloud server.
Symantec single point of contact (SPOC) server endpoint used by the agents to receive notifications from the Symantec cloud server.
Symantec LiveUpdate server endpoint for the Symantec agent to get the latest malware protection engine components and definitions to keep the protection on the agents up-to-date.