[Petya V4sechkin]

Larions, пример:
Привет от Microsoft: KB3002657 ломает ntlmssp

Или в этой теме вариант:

Thanks all of you, this issue was fixed finally. As your suggestions, it was caused by the firewall. Because the file server and the DCs are in two different subnets, between which there is a firewall that blocked the NTLM authentication communication. So I enabled the traffic from the file server to DCs, then it was fixed.