Problems with computer add-on domain

Today encountered a very strange problem, a machine tried to join the domain, but the old will be kicked out of the domain, after a while can not RDP remote login, hint: The local Security authority cannot be contacted, on this machine landed no problem, So you have to repeatedly join the domain, joined the domain when the remote server is not supported. Later I looked, probably the machine name is too short, only 4 bits, may not meet the policy requirements. Later I think of a roundabout method, first the machine name to 9-bit, such as PCBA-1234, and then join the domain, try to RDP landing also no problem, so began to rename the PCBA, restart, try to remote login, no problem.

Problems with computer add-on domain