Windows XP and Exchange 2000

It is something to do with XP and Windows2000 domains. Disable the Integrated windows authentication from IE and you will be fine. http://support.microsoft.com/default.aspx?scid=kb;en-us;274397

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VOIPeng (IS/IT--Manageme) Sep 26, 2002
The problem was that RPC was corrupted, in the registry RPC was missing 5 entries. Some how the Win XP and Office XP service packs corrupted the registry entries for RPC. Gotta love Microsoft.

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VOIPeng (IS/IT--Manageme) Jan 10, 2003
Check the Registry: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\RPC\ClientProtocols
You should have 4 keys:
ncacn_http REG_SZ rpcft4.dll
ncacn_ip_tcp REG_SZ rpcft4.dll
ncacn_np REG_SZ rpcft4.dll
ncadg_ip_udp REG_SZ rpcft4.dll

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bmellesmoen (Programmer) Jan 13, 2003
Worked like a champ and thanks so much for your help!

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VOIPeng (IS/IT--Manageme) Jan 13, 2003
I don't understand why Microsoft doesn't have this on their Technet site, as I have encountered this error numerous times when running Windows XP and Office XP and doing Service Pack upgrades.

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I agree COMPLETELY - it's listed under an obscure number is the MS KB
(321652) and searching for the Event Log Messages doesn't bring up the correct KB article.

I suffered the symptoms described above after a reinstall of XP after SP1 corrupted the hard disk - come on Microsoft, get this one sorted!

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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."

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?

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Are you receiving any errors in the event log of the exchange server? I had this problem once and read some where that the email alias and the user account must be the same, but this was on an nt4 workstation running outlook 2k that wasn't part of the domain. but matching the username and the alias worked for me.

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VOIPeng (IS/IT--Manageme) Sep 18, 2002
The client is not part of the domain so on Outlook Authentication is set to none. And yes the Alias matches the userid. This was working fine before this only recently stopped working, the client had to reload Windows XP do to an error during XP SP install. But everything has been reloaded, Office Xp included. This user can login via another PC so it is specific to that one PC.

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FraSo (IS/IT--Manageme) Sep 25, 2002
have you got any special chars in clients username like "_", .... ?

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nhidalgo (MIS) Sep 25, 2002
Have you tried deleting that users profile off of that pc(documents and settings\username). And then setting everything up for that person again.

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