Connecting to a Mac OS X share from Vista

One of the things that is annoying me about Vista is that I can’t
connect to my SMB shares on my Mac. When I try to log in, it rejects my
password. I looked at /var/log/samba/log.smbd on my Mac, and here’s
what I saw:

[2006/09/21 13:55:45, 1] auth_ods.c:opendirectory_ntlmv2_auth_user(312)
User “username” failed to authenticate with
“dsAuthMethodStandard:dsAuthNodeNTLMv2” (-14090)

So I poked around the Group Policy Edit (type gpedit.msc into the
search or address box and press enter). I drilled down into:

Local Computer Policy
-> Computer Configuration
-> Windows Settings
-> Security Settings
-> Local Policies
-> Security Options
and I changed “Network security: LAN Manager authentication level” to
“Send LM & NTLM – use NTLMv2 session security if negotiated” and it
seems to work.


  1. josh Said,

    April 27, 2007 @ 2:37 pm

    nice, worked perfectly.

  2. Eric Said,

    February 5, 2009 @ 11:14 am

    Exactly what I needed – thank you!

  3. Not Invented Here » Blog Archive » Mac OSX share from Vista not working? Solution! Said,

    March 13, 2009 @ 4:22 pm

    […] that the commandline smbclient would actually connect just fine. A quick web search found this post that discussed a fix, and it appears that it […]

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