[zarat]

Разобрались. Все было в NTLMv2. Настройки безопасности. Если кому будет необходимо то вот решение:
Оригінальна відповідь:
http://superuser.com/questions/57656...mb-cifs-shares
“Turns out the domain had a policy in place to only use NTLMv2 (as expected for stronger security), of which Windows XP will not use by default. I had to make the following registry change on the non-member computer to use NTLMv2. Local Security Policy is not available to make this change, as it's the home edition of Windows XP.
Registry path: HKLM\System\CurrentControlSet\Control\Lsa Setting name: LmCompatibilityLevel
Default value: 0 (Clients use LM and NTLM authentication, but they never use NTLMv2 session security. Domain controllers accept LM, NTLM, and NTLMv2 authentication.)
Required value: 5 (Clients use only NTLMv2 authentication, and they use NTLMv2 session security if the server supports it. Domain controller refuses LM and NTLM authentication responses, but it accepts NTLMv2.)
More information on this setting
The non-member computer now accesses SMB/CIFS shares on the domain instantly using the classic "create the same local user on the domain with the same password" trick.”