[Samba] winbindd authentication fails with NT_STATUS_RPC_SEC_PKG_ERROR intermittently

[Bharath Bheemarasetti]

Yes, I did reach out to Microsoft, yet to get a response from them. Does
not seem to be a problem with netlogon.exe process as authentication works
for the same user in another setup that is using the same DC at the time of
failure.

On Mon, Jul 3, 2023 at 9:32 PM Jeremy Allison <jra at samba.org> wrote:

> On Mon, Jul 03, 2023 at 01:10:26AM +0530, Bharath Bheemarasetti via samba
> wrote:
> >On further investigation, the error that shows up in packet capture is
> that
> >the DC is returning [Fault: nca_s_fault_sec_pkg_error] for the
> >NetrLogonSamLogonEx call. There are no error logs (or any logs) regarding
> >the netlogon call failure in the netlogon logs even after enabling debug
> >logs in the DC. One more interesting thing is restarting the netlogon.exe
> >service on the DC also fixes the issue temporarily similar to restarting
> >the smb service
>
> That sounds like netlogon.exe crashing in some way. Have you
> reported this to Microsoft ?
>