Article ID: 255843 - View products that this article applies to.
This article was previously published under Q255843
When you try to use Outlook to log on to an Exchange Server computer, you may receive one of the following error messages:
The name could not be resolved. The Microsoft Exchange address book was unable to logon to the Microsoft Exchange Server computer.
Outlook could not logon.
There is no loss of connectivity from the computer that is running Windows 2000 or Windows XP. Remote procedure call (RPC) connectivity works, you can open a shared list on the Exchange Server computer, you can log on to the Microsoft Windows NT Server 4.0 domain, and you can ping by name and by Internet Protocol (IP).
Your logon information is incorrect.
To resolve this problem, remove and re-add Transmission Control Protocol/Internet Protocol (TCP/IP) in the Local Area Connection properties:
285034The article contains the following procedure to remove TCP/IP from your Windows 2000-based computer:
(http://support.microsoft.com/kb/285034/ )How to remove and reinstall TCP/IP for Windows 2000
(http://support.microsoft.com/kb/299451/ )How to remove and reinstall TCP/IP on a Windows 2000 domain controller
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/325930/ )How to troubleshoot connectivity issues that are caused by RPC client protocol registry entries
Article ID: 255843 - Last Review: October 28, 2006 - Revision: 3.5
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