Article ID: 191854 - Last Review: November 1, 2006 - Revision: 2.1 RAS Authentication Does Not Work Connecting to RRAS ServerThis article was previously published under Q191854 SYMPTOMS
When you attempt to connect your Windows 2000-based computer by using Remote Access Server (RAS) to a Windows NT Server 4.0-based computer that uses Routing and Remote Access Service Update (RRAS), you may receive error
messages.
The Windows 2000-based computer displays the following error message when it cannot establish a connection:
Retrying authentication...
Error 691: Access denied because username and/or password is invalid on the domain. The Windows NT Server 4.0-based computer logs the following error messages in the system log:
Event ID: 20014 Source: Router Type: Warning Description: The user %Name% has connected and failed to authenticate on port %Name%. The line has been disconnected.
Event ID: 20049 Source: Router Type: Warning Description: The user connected to port %Name% has been disconnected due to an authentication timeout. RESOLUTION
To resolve this issue, obtain the latest service pack for Windows NT version 4.0. For additional information, see the following article or articles in the
Microsoft Knowledge Base: 152734
(http://support.microsoft.com/kb/152734/EN-US/
)
How to Obtain the Latest Windows NT 4.0 Service Pack
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 4.
MORE INFORMATION
For additional information about the RRAS and PPTP upgrades, please see the following
article(s) in the Microsoft Knowledge Base: 189594
(http://support.microsoft.com/kb/189594/EN-US/
)
RRAS Upgrade for WinNT Server 4.0 Hotfix Pack 3.0 Release Notes
189595
(http://support.microsoft.com/kb/189595/EN-US/
)
PPTP Performance & Security Upgrade for WinNT 4.0 Release Notes
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