[Samba] Event ID 4 on W7/2008R2 AD members

Alex Crow acrow at integrafin.co.uk
Wed Jan 4 18:25:26 UTC 2017

Hi all,

We have the following issue:

Migrated from Samba NT-Style/Classic domain to Samba 4.5.1 (a little 
later 4.5.2) AD domain. Most Windows clients and member servers at OS 
level of Win7 or Server 2008R2 were fine, but on a few, although right 
after the migration, users were able to log on to these machines, after 
a day or two users were unable to unlock or log in to these machines. 
Event viewer registers Event ID 4 as referenced in technet here for each 
login/unlock attempt:


The template text in the article matches the event viewer message 
exactly. One interesting point is that %1 is the netbios/short hostname 
of the relevant machine and the target name %3 is the same as %1 apart 
from it's a different case.

We had a power outage over the weekend, which lasted and today a number 
of machines of the same OS version have suffered the same problem. In 
this case they were left locked and could not be unlocked by the user, 
with the same Event ID in Event Viewer.

In both cases if the member machine is rebooted, the problem goes away.

Any ideas on this issue guys and gals?



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