Resource Leaks Through Iphlpapi.dll in Windows NT 4.0

ID: Q241480

The information in this article applies to:

Microsoft Windows NT Server version 4.0
Microsoft Windows NT Workstation version 4.0
Microsoft Windows NT Server, Enterprise Edition version 4.0

SYMPTOMS

When the program you are using loads or unloads the Iphlpapi.dll file on your computer running Windows NT 4.0 (for example, by a Winsock 2.0 layered service provider), a system resource leak may occur, especially a memory or a handle leak.

CAUSE

This behavior occurs because part of the source code for the Iphlpapi.dll file causes a leak in the file handle created in OpenIpDriver() and in three critical sections allocated in the DLL Entry function.

RESOLUTION

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

http://www.microsoft.com/windows/servicepacks/

Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, 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://www.microsoft.com/support/supportnet/overview/overview.asp

STATUS

Microsoft has confirmed this to be a problem in Windows NT 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 6.

Additional query words: TCP/IP, API's

Keywords : kbinterop ntsp kbbug4.00 kbfix4.00 NT4SP6Fix
Version : winnt:4.0
Platform : winnt
Issue type : kbbug