SP4 RAS Server Hangs Up When RAS Client Tries to Connect as Windows NT 3.1 Dial-Up Server

ID: Q219380

The information in this article applies to:

SYMPTOMS

When a Microsoft Windows NT 4.0 RAS client tries to connect to a RAS server computer running Windows NT Server 4.0 Service Pack 4, the RAS server unexpectedly hangs up the connection.


CAUSE

This problem occurs because the Ndiswan.sys driver for the RAS server in this particular hardware configuration becomes deadlocked. The deadlock occurs in the code that causes the NdisWanSend() API call to quit without contacting the RAS client. The RAS server then hangs up.


RESOLUTION

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual fix. For information on obtaining the latest service pack, please go to:

For information on obtaining the individual fix, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:
http://support.microsoft.com/support/supportnet/default.asp

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support


STATUS

Microsoft has confirmed this to be a problem in Windows NT Server 4.0 and Windows NT Server 4.0 Service Pack 4. This problem was first corrected in Windows NT Server 4.0 Service Pack 5.

Additional query words: 


Keywords          : kbbug4.00 kbfix4.00 nt4sp5fix 
Version           : winnt:4.0,4.0 SP4
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: May 21, 1999