[Samba] NTLMv2 can't auth affter Win2003 update

[Rowland Penny]

On 17/03/15 10:13, Sense Zeng wrote:
> And use ntlm_auth fail too:
>
> ntlm_auth --username=testuser
> password:
> NT_STATUS_LOGON_FAILURE: Logon failure (0xc000006d)
>
>
> 2015-03-17 7:30 GMT+00:00 Sense Zeng <opaperjam at gmail.com>:
>
>> My AD server is Win2003. And my linux server is ubuntu. Samba version is
>> 2:3.6.3-2ubuntu2.12 and 2:4.1.6+dfsg-1ubuntu2.14.04.7. They are join into
>> the Win2003 AD as normal smb servers (not DC).
>>
>> After Win2003 DC autoupdate last week, I can't use smbclient access all
>> samba server with NTLMv2:
>>
>> ~$ smbclient //172.16.3.13/share -U testuser
>> Enter DOMAIN\testuser's password:
>> session setup failed: NT_STATUS_LOGON_FAILURE
>>
>> But when I set "client NTLMv2 auth = yes" in smb.conf with smbclient, it's
>> success to access.
>>
>> And wbinfo -a failed with the plaintext password:
>>
>> # sudo wbinfo -a DOMAIN\\testuser%password
>> plaintext password authentication failed
>> Could not authenticate user DOMAIN\\testuser%password with plaintext
>> password
>> challenge/response password authentication succeeded
>>
>> Before Win2003 DC update, everything is just fine. Next list is what
>> update had been install:
>> KB3032323
>> KB3039066
>> KB3046049
>> KB3033395
>> KB3034344
>> KB890830
>> KB3002657
>> KB3035132
>>
>> And now not only the samba, Win7 has same NTLM auth problem too. How can I
>> fix it?
>>

Hi, you could try searching the internet with the list of 'KBs' you 
supplied (I will give you hint, start at the bottom and work up, missing 
out KB3035132)

Rowland