Outlook XP can't logon to Exchange 2000 3

[VOIPeng]

We have a client that is connecting via a Cisco VPN to our
HQ office. The VPN client seems to be working fine, I can
ping and resolve the Exchange server and see the client's
IP on the Exchange server with a NETSTAT command. However
when the client opens Outlook XP they are prompted for
username, password & Domain as usual however, they enter
it once then are prompted a second time, then are given
the following error message:

"Your logon information was incorrect. Check your username
and domain, then type your password again. If your account
is new or if your administrator requested a password
change your will need to click Change Password then logon
with your new password."

Can anyone help? I have logged on locally to this account
and the user can connect fine using OWA, so the username,
password and domain are fine. The user can see shared folders on the Exchange 2000 Server SP3. The Exchange Server can ping the client fine as well.

We have reinstalled Windows XP Pro with the lastest SP's, reinstalled Office and all the Service Packs, we reinstalled all VPN software and the Network Adapter. I have no idea what else to look for?? Can someone please help?

Any help is much appreciated,
Thank you,
Frank Mirecki
BrantTel Networks

 

[gurner]

And if that doesn't work.

Not sure why this worked, but Reset the effected user accounts password in AD to thier user name, log them off and then on again.

as, for example.

User=FRED
Pswd=FRED

When logged on do a Ctrl+Alt+Del and reset their password from the local machine.

Has worked everytime i have tried it on a LAN machine prompting for user name and password in Outlook

 

[sparky33]

I had the exact same problem as above, and yet none of those fixes worked.

Luckily I had a "backup" Exchange Server running at home. I compared registry keys and found the following anomoly:

In the Registry key:
\\HKEY_LOCAL_MACHINE\Software\Microsoft\Rpc\Netbios
there was only ONE entry on the non-working Exchange 2000 Server, and TWO entries on the working one.

Both had the following DWORD values:

Name - ncacn_nb_tcp0 TYPE - REG_DWORD Data - (0)

The one at home also had the following:

Name - ncacn_nb_tcp1 TYPE - REG_DWORD Data - (1)

Sure enough, I plugged this into the Exchange Server at work and people are able to login just fine.

Hope this helps someone!