win7 เข้า logno ไม่ได้

Since your Windows 7 computer is not a domain member, when you accessing resources on the server, it should prompt for username and password, Please be assure that you enter a valid domain username and password. The format should be:

Domainname/username
Password

Then, the credential will be saved. The next time when you access the resources, you need to pass the NTLM authentication. However the default levels of NTLM authentication in Windows Server 2003 and in Windows 7 are different. Than may be the root cause.

1. Open gpedit.msc from Start Search box. Then locate to the following policy.
2. Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\Network security: LAN Manager authentication level
3. Please change “Send LM & NTLM - use NTLMv2 session security if negotiated”.

Multiple connections to a server or shared resource by the same user’

 
Start > Run and typed net use.
I had a mapping showing there, but it wasn’t assigned a drive letter. I had to delete the resource using the
command net use /delete \\servername\foldername