Trying to get a few workstations registered and I keep receiving the error message below. Server is a ZCM11.1 and the agent on the Win7SP1 workstion is version I've read TIDs about this saying it was fixed in version 10.x but I haven't seen any ideas that have worked or are for ZCM 11. Any ideas? I know I have been typing the correct password and tried with several users to the same result.

zac reg -u Administrator https://theserverip (or DNS name).
Unable to register with the server at: https://theserverip (or DNS name).
Unexpected server result. Server code: -34. Server message Invalid Device Authentication Information.