Microsoft KB Archive/816898

= &quot;A Phonebook Entry Cannot be Added: The Authentication Service Is Unknown&quot; Error Message When You Configure a Windows 2000 Remote Access Server from Windows Server 2003 =

Article ID: 816898

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft Windows Server 2003, 64-Bit Datacenter Edition
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Small Business Server 2003 Standard Edition
 * Microsoft Windows Small Business Server 2003 Premium Edition

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SYMPTOMS
When you try to configure a Microsoft Windows 2000 Routing and Remote Access server from the Windows Server 2003 Routing and Remote Access utility, you may receive the following error message:

A phonebook entry cannot be added:

The Authentication service is unknown.



CAUSE
This issue occurs if you try to configure a demand-dial network interface on the Windows 2000 Routing and Remote Access server.



WORKAROUND
To work around this issue, configure a Remote Desktop Connection to the Windows 2000 server and use the Routing and Remote Access utility on that server to configure the demand-dial network connection.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
When you try to administer the Windows 2000 server by using the Windows Server 2003 Routing and Remote Access utility, remote access service remote procedure calls (RPCs) are used. Because of new security features introduced in Windows Server 2003, these remote access RPC calls are not compatible with Windows 2000 RPCs.

The new Windows Server 2003 remote access service client RPC call contains additional authentication information that is not recognized by Windows 2000 Server. Therefore, the RPC call causes an exception that is translated into an error status, generating the error message described in the &quot;Symptoms&quot; section of this article.

Keywords: kbpending kbbug kberrmsg KB816898

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