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From: "Habermann, David (D)" <DAHabermann AT dow DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: occasional failure to look up
Date: Tue, 25 Nov 2014 17:32:59 +0000
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On Nov 25 16:24, Habermann, David (D) wrote:
> >> Still, some debugging on affected systems might be enlightening.
> 
> > I'll be happy to do anything of interest.  As a starter, I'm going 
> > to see if I can figure out which of my SIDs are being used by the 
> > couple of file shares I routinely access from cygwin.
> 
> I was unable to quickly figure out anything...looking at this make me
> feel a bit dense.  I do have a copy of Active Directory Explorer and
> can do some looking, but the materials inside are so huge that I don't
> even know where to start.

After a bit more hacking around, I found that the SID 
S-1-5-21-4015118-2039090470-1726288727-4013 (the "group ID" for DOW/U074036) is 
Located under CN=S-1-5-21-4015118-2039090470-1726288727-4013,CN=ForeignSecurityPrincipals,DC=dow,DC=com

I'm not sure what that means, even after Googling "ForeignSecurityPrincipals"....it's like their explaining it in a foreign language.  Perhaps it means something to you?