Can I function with the Enforce Server and the DLP agent at different versions? In this case the DLP Server is at 15.5 and the Endpoint agents are at 14.6. Is that a compatible environment? Does Symantec approve that setup?
As per Symantec dlp 15.5 upgrade guide , you can have DLP enforce and endpoint server v15.5 with agent 14.6
Please mark it as a solution , if it answers your question
Adding on to what fadyazab has said, kindy note that any new policy rules introduced after 14.6 will not be supported by the 14.6 DLP Agents.
Also can you confirm the version of your DLP Endpoint Server ?