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When you create and install a custom Remote Access service security DLL on a Windows 2000 Server-based computer that is running the Routing and Remote Access service to authenticate remote users, the RAS security DLL may be incorrectly used to authenticate remote users who use a connection type other than a modem connection. For example, the Remote Access service security DLL is used to authenticate users who connect by using a Virtual Private Networking (VPN) connection. Because of this, VPN users may receive an "Error 619" error message when they try to access the server.
This problem occurs because Windows does not check the connection type before it calls the Remote Access service security DLL. Because of this, the Remote Access service security DLL is used for both modem and non-modem connections.
Service Pack Information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language. The global version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Date Time Version Size File name ----------------------------------------------------- 20-Feb-2003 20:15 5.0.2195.6666 69,904 Mprddm.dll
Note Because of file dependencies, this update requires Windows 2000 Service Pack 3 (SP3).
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.
As of March 2003, Windows 2000 provides Remote Access service security host support for asynchronous modem connections only. The following other types of connections are not supported:
Ethernet, which is not a modem connection.
VPN, which is not a modem connection.
ISDN, which is a synchronous connection.
For more information about Remote Access service security host support and the Remote Access service security DLL, view the Remote Access service Security Host Support topic in the Remote Access Service section of the Microsoft Platform SDK documentation. To view this documentation, visit the following Microsoft Web site: