Routing and Remote Access Event ID 20100 (172512)

SYMPTOMS

After you install the Routing and Remote Access (RRAS) Update for Windows NT 4.0 on your Windows NT 4.0 RAS server, Dial-Up Networking (DUN) clients may not be able to connect to your RAS server when using third party security authentication; one such product is SecurID from Security Dynamics. You may also note the following event log message in the event viewer on the RRAS server:

Event ID: 20100
Source: Router
Description: The user was authenticated as %1 by the third party security host module but was authenticated as %2 by the RAS security. The user has been disconnected.

Where %1 and %2 are variables that represent user names.

NOTE: In Windows 2000 you receive Event ID 20096, where the source is RemoteAccess, but the text is the same.

RESOLUTION

Obtain the Routing & Remote Access Service Hotfix Update mentioned below.

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Routing and Remote Access Update for Windows NT Server version 4.0. This problem was corrected in the Routing & Remote Access Service Hotfix Update. You can obtain this update from Microsoft's World Wide Web Site on the Internet at the following location:

http://www.microsoft.com/ntserver/techresources/commnet/default.asp#RoutingandRAS

NOTE: Because the Microsoft Web site is regularly updated, the site address may change without notice. If this occurs, link to the Microsoft home page at the following address:

http://www.microsoft.com/

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

MORE INFORMATION

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

For additional information, see the following article or articles in the Microsoft Knowledge Base:

233340 Event ID 20100 on Server When SecurID Client Is Not Authenticated