SEPM 11.7405.1424 error 'Failed to connect to the Directory server'.

Hello Symantec Community,

I am attempting to add some new organizational units to my SEPM and are receiving error 'Failed to connect to the Directory server'. Verify that the server name and port are correct [0xe0210000].

I've been trying to find which domain controller it's pointing to.

Reading through the SEPM Admin guide, it states to click admin then servers, however the servers tab does not exist in my SEPM (see attachment)

DNS servers are correct in the tcp/ip settings of the server.

Any reason why this 'servers' tab would be missing in my SEPM?  I only have one SEPM.

Many thanks for your assistance.

regards

Keir Doubas