Now, I'm pretty advanced I think on this subject (AD), but this particular issue has just got me baffled to no end! If I could give 1000pts I would! :)
Here's my AD environment & my issue - a simple single forest/domain, W2K3 SP2, 10 branch locations with sites/subnets configured for each. All run well...except at 1 branch. At this problem branch, everything is fine really, EXCEPT for the fact that upon bootup of my DC, I get the nice "Duplicate name exists on the network" error. Now, I certainly and by all means know what this is saying.....BUT, there is absolutely no device at this branch or on my entire domain with this same hostname. An extra caveat to note...the error only occurs at this branch on there subnet. We have different subnets (10.100.., 10.101...etc. This branch is a 10.108 subnet). If I place this server on a different subnet with its current hostname, it's fine. But, in the 10.108 subnet, I get this error. I've checked every PC, & printer at this location to verify they have different host names and they all do. I've run the "Find" feature in AD U&C and came up with NOTHING but this server name. When I ping this server name, it returns with it's current static IP address. If I rename the server and ping this problem name, I get no replies. We do not run WINS. Can someone direct me how to maybe run a query or something to find the problem? I've tried flushing the DNS cache on several machines and this server. Thing is, the server has been rebuilt and even replaced and still receive the error. When I did do a rebuild, etc., I ran the metadata cleanup NTDSUTIL and that didn't resolve it either.
And btw....this issue has actually been going on for over 2yrs!!!! (seriously; I inherited it..oh joy)
Thanks in advance!