Join Fails - no machine account?

Andrew Bartlett abartlet at
Wed Dec 5 23:14:01 UTC 2018

On Wed, 2018-12-05 at 14:28 -0500, Bill Mccabe via samba-technical
> On Wed, Dec 5, 2018, 03:00 Andrew Bartlett <abartlet at wrote:
> > 
> > It is trying to check if the machine is already joined to the domain,
> > so you don't accidentally re-join it (this takes time and removes the
> > DC from operation).  The error is exepected, indeed hoped for.
> > 
> > I re-used the existing code from Samba to do that, so the error message
> > is a little more scary than is approprite here.
> > 
> > Sorry if this caused some confusion.
> > 
> > Andrew Bartlett
> > --
> > Andrew Bartlett             
> > Authentication Developer, Samba Team
> > Samba Developer, Catalyst IT
> >
> > 
> > 
> > Andrew,
> Thanks for responding. From what you are saying it sounds as if the join
> operation will recover when it does not find a domain controller with the
> same name as the one that I am trying to join. In fact, it may already be
> recovering, in which case I can ignore the error? 


> Assuming that I can
> ignore that error, then could there be a different problem that is
> preventing the join? Such as the timeout interval is too short?


> I can post the precise error message when I have a moment, from what I
> remember the timeout occured in the script and was related to
> Also while monitoring the traffic it looked like the client was
> sending an acknowledgement to the server, the server was responding back,
> but the client was not receiving this response. This conversation was
> taking place over a high port (41952), I believe. Also the failure appeared
> after an attempt to do a TCP window size change.
> I guess what I am getting at here is I would like understand if this is a
> networking problem since I am attempting to do the join on a vxlan tunnel,
> or it is a samba bug.
> I have already had to turn off ethernet checksumming in order for ssh to
> operate between the two machines, maybe there is something else that is
> lower level that is also causing the join to fail?

I'll need those details to speculate.

Andrew Bartlett

Andrew Bartlett
Authentication Developer, Samba Team
Samba Development and Support, Catalyst IT

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