samba - Oct 2018 - Unable to join domain by using NetJoinDomain on Windows

Hello,

I am using samba 4.8.6 and 4.9.1 to build a domain. And I have a Windows 7
virtual machine to join the domain. However, I found it was fail when I
used the NetJoinDomain which is the C# Library on Windows.
I am using the Unsecure option, authenticating by the machine password. And
Here is my code

int ret = NetJoinDomain(null, myDomainName, null, null, myMachinePassword,
(JoinOptions.NETSETUP_JOIN_DOMAIN | JoinOptions.NETSETUP_JOIN_UNSECURE |
JoinOptions.NETSETUP_DOMAIN_IF_JOINED |
JoinOptions.NETSETUP_MACHINE_PWD_PASSED));

 It was successfully on samba 4.5.16. I used the same method to join the
domain previously but it doesn’t work after I upgraded samba to 4.8 above.
The return code is 1326 which said that UNKNOWN USERNAME OR INCORRECT
PASSWORD.


Does anyone have the idea about this issue?

Best Regards,
Joe

On Mon, Oct 22, 2018 at 04:18:35PM +0800, 周永健 via samba
wrote:
> Hello,
> 
> I am using samba 4.8.6 and 4.9.1 to build a domain. And I have a Windows 7
> virtual machine to join the domain. However, I found it was fail when I
> used the NetJoinDomain which is the C# Library on Windows.
> I am using the Unsecure option, authenticating by the machine password. And
> Here is my code
> 
> int ret = NetJoinDomain(null, myDomainName, null, null, myMachinePassword,
> (JoinOptions.NETSETUP_JOIN_DOMAIN | JoinOptions.NETSETUP_JOIN_UNSECURE |
> JoinOptions.NETSETUP_DOMAIN_IF_JOINED |
> JoinOptions.NETSETUP_MACHINE_PWD_PASSED));
> 
>  It was successfully on samba 4.5.16. I used the same method to join the
> domain previously but it doesn’t work after I upgraded samba to 4.8 above.
> The return code is 1326 which said that UNKNOWN USERNAME OR INCORRECT
> PASSWORD.
> 
> 
> Does anyone have the idea about this issue?
Can you post a wireshark trace of the join failing ?