[Samba] Error joining Linux member to 4.5.0 DC: Indicates the SID structure is not valid

Vinicius Bones Silva vbs at e-trust.com.br
Fri Oct 21 16:05:47 UTC 2016

I've had this problem as well. We created a domain with two 4.4.4 DCs and everything 
worked. Sometime after we upgraded the DCs to 4.5.0, the machine joins and some user 
logons displayed the invalid SID message. We tried recreating the domain from scratch with 
4.5.0, but had the same problem. We recreated everything with 4.4.4 , and did not have 
problems so far.

Em 20/10/2016 18:47, Arthur Ramsey via samba escreveu:
>>> I would suggest you remove the 'password server' line, this will allow
>>> Samba to find the best DC to use.
> I use that because I've not see adequate load balancing otherwise (I provide a 
> differently ordered list to half of the members).
>>> I also don't understand why you have a 10 million range for the
>>> BUILTIN users and only a 39,999 range for the domain users.
> No good reason.  No where near any of the limits.
>>> Other than that, joining with 'net ads join -U Administrator' should
>>> work.
> Look through my recent posts, I'm having a ton of issues with Samba.  Not sure what the 
> root cause is, but I keep hoping one of these errors will lead someone to answer.  I've 
> tried a lot on my own, but I can't figure it out.  The error seems the most revealing.  
> I'm wondering about the RID process / possible SID collision.  Now I can't join a 
> Windows machine with my login either.
>> I also forgot to say, remove the uidNumber from Administrator, add this
>> line to smb.conf:
>>      username map = /etc/samba/user.map
>> Then create '/etc/samba/user.map' with this content:
>> !root = MEDITURE\Administrator MEDITURE\administrator
>> Administrator administrator
>> This will then ensure that Administrator gets mapped to root.
> I added it as a test, I didn't have it before.  I don't want the Administrator account 
> to even allow access on member Linux servers. I just use it for joining in scripts.
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Vinicius Silva

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vbs at e-trust.com.br
skype: vinicius.bones.silva


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