unable to map by hostname

Hi Experts,
Need some advice. I have very weird problem in one of member windows 2003 server. I just try to map \\Servername\shared (either command line or via windows explorer), but I am being challenged with password and it's not accepting my password if I key in.

What I have done and found out:
-. I can map some other server without any problem.
-. The server is guest OS in ESX, but I don't think this is ESX server or environment problem. As other server which is seating on same ESX, doesn't face similar problem
-. Other server which is seating in same subnet has no similar issues. I guess I can rule out on firewall or network.
-. I will be same problem if I use FQDN, strangely enough that I can map by IP address
-. I have tried to re-join the domain, but still no luck
-. Cant find any clue or new entry in event log which hoping can give some hints.
-. If I map in command prompt by typing "net use \\servername", I can map in windows explorer without being challenged by password

Any ideas?
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Toni UranjekConsultant/TrainerCommented:

Can you check if clock and time zone is correctly configured on this server. There should be no more than 5 minutes of time difference between DC and any domain member if you want Kerberos to work. When you are access server by its IP, NTLM is used instead of Kerberos and that could be the reason why it's working.


plusignAuthor Commented:
the time is synch. How can i verify whether the authentication is using kerberos? The weird thing, i can map some other server without any problem by \\hostname\shared.
Toni UranjekConsultant/TrainerCommented:
Check Event Viewer's logs for errors. If server does not use Kerberos, you should see Kerberos related errors.
plusignAuthor Commented:
sorry guys for late response on this. I have rebuilt the server instead.

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Windows Server 2003

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