You logon information is incorrect. Check your username and domain and try your password again…….

I’ve got a strange problem.

Windows XP PC on a domain using Microsoft Outlook to connect to the local exchange server. I had to do a repair installation of the Windows XP as the user installed some software that made the PC unusable, even in Safe Mode.

After the repair installation the user logged in to the PC using his domain account with no problem, he can access the folders on the server he must etc…but his outlook doesn’t want to connect, it keeps asking him for a username and password.

I’ve removed to PC from the domain, changed to PC name, put it back into the domain, removed his local profile, changed his password, removed his email account and recreated it.

If he uses OWA it works fine, but as soon as he tried to connect with Outlook it asks him for a username, password and domain and no matter what I type in there, outlook doesn’t accept it.

It says "You logon information is incorrect.  Check your username and domain and try your password again.  If you account is new or your administrator requested a password change you new to click Change Password then login with your new password."

If I log in as Administrator on that PC, I’ve got no problem accessing my email using the Administrator account, hence why I removed his local profile and recreated it.

Please help, I am out of ideas.
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XaTeAsked:
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marc_nivensCommented:
This usually means you're missing the ClientProtocols key.  Check this KB to verify:

http://support.microsoft.com/kb/321652/EN-US/
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XaTeAuthor Commented:
Cool, thanks, it works!
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anderscdCommented:
Hi,

I have tried your suggestion on editing the registry to no avail. I had my IT group uninstall MS Office and then reinstall to MS Office 2003. It worked great for about one day. Then my VPN connection temrinated and when I tried to log back into Outlook after reconnecting via VPN and Dial up it will not let me again. They have reset my password, but I still can't get in. Any other suggestions?
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gsb_experts_exchangeCommented:
I am having the same problem as originally stated.  The only solution I have found to work so far is to upgrade to Outlook 2003.  That to me is not a solution.  There is something wrong that she be able to be fixed.  This all started happening when one of my DC's went down unexpectedly.  Any new suggestions?
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