[Samba] Failed to convert SID to a UID for a computer

tizo tizone at gmail.com
Wed Jan 25 17:14:00 UTC 2023

Thanks for the response Rowland. After setting an UID manually for one
of the Windows computers, Samba is logging another message on the file
servers (multiple times in a row, maybe more times than the previous

[2023/01/25 14:09:35.198587,  0]
  check_account: Failed to find local account with UID XXXXXXXXX for

Is that normal too?. How could we avoid it?.

On Mon, Jan 23, 2023 at 12:32 PM Rowland Penny via samba
<samba at lists.samba.org> wrote:
> On 23/01/2023 15:21, tizo via samba wrote:
> > We have a couple of hosts running Samba 4.16.5 as AD DC. Besides, we
> > have other hosts with Samba 4.15.5 as file servers. From time to time
> > the file shares that are mounted with cifs from some Linux clients get
> > stuck.
> >
> > All I can see in Samba logs on the file servers, are message like:
> >
> > check_account: Failed to convert SID
> > (dom_user[SMB\host-xxx$]), being host-xxx one of the Windows computer
> > client.
> >
> > Is this message normal?. Or should I set an UID manually for Windows
> > computers as I do for users and groups (as idmap backend is ad)?.
> That is perfectly normal, on Windows a computer is a user with an extra
> objectclass. On Linux, a computer is just a computer. You can either
> ignore those messages or you can do as you suggest, give each computer a
> uidNumber attribute.
> >
> > What about the problem?.
> No idea, not enough info provided.
> > Could it be related to the message?.
> I doubt it.
> Rowland
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