Below is the matrix of Endpoint Security Clients vs Security Management Servers (with the Endpoint Policy Management blade) that are able to support these clients:
To get new features and capabilities, E80.65 and higher clients must be managed by an R77.30.03 server (which requires the dedicated R77.30 Jumbo Hotfix for Endpoint Security) or higher.
Yes - This Endpoint Security Server is able to manage this Endpoint Security Client
x - This Endpoint Security Server can not manage this Endpoint Security Client
Starting client version E83.00, the official support for the R77.30, R77.30.X, R77.30 EP6.5, R77.20 EP6.1, R77.20 EP6.2 servers ended and does not covered by QA certification. Customers that got extended support will continue to receive full support based on their agreements.