Microsoft KB Archive/326036

= XADM: Cannot Log On to Exchange 2000 Server Computer by Using the Correct Credentials =

Article ID: 326036

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition

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This article was previously published under Q326036



SYMPTOMS
If you use Microsoft Outlook to connect to an Exchange 2000 server, you are prompted to provide a user name, a password, and a domain name. After you enter this information, Outlook repeatedly prompts you to provide your credentials, and you cannot connect.

Note You are not a member of the Administrators group or the Domain Admins group, but this problem is resolved if you are added to the Domain Admins group.



CAUSE
The computer that is running Outlook is trying to make a remote procedure call (RPC) connection through named pipes. Exchange 2000 permits users to make RPC connections through named pipes. However, you cannot connect to the Exchange 2000 server by using RPC through named pipes if you are not a member of the Domain Admins group.



RESOLUTION
To resolve this problem, make sure that you are trying to make RPC connections through Internet Protocol (IP). To do so, follow these steps:  Remove the ncacn_np item from the RPC_BINDING_ORDER registry value in the following registry key:

 Make sure that the following registry key contains the information that is listed in one of the following tables, as appropriate to your operating system:

The following values are the core required values for Microsoft Windows XP and Windows 2000:

The following values are the core required values for Microsoft Windows 98:

The following values are the core required values for Microsoft Windows NT 4.0:





MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

163576 XGEN: Changing the RPC Binding Order

Additional query words: terminal

Keywords: kbprb KB326036

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