Windows NT 4.0 Tcpip.sys Hotfixes Dated 4/28/99 to 5/28/99 Replaced

ID: Q234593

The information in this article applies to:

Microsoft Windows NT Server version 4.0 SP5
Microsoft Windows NT Workstation version 4.0 SP5
Microsoft Windows NT Server, Enterprise Edition version 4.0 SP5

SYMPTOMS

Post-SP5 hotfixes for the Tcpip.sys driver dated April 28, 1999 to May 28, 1999 contain a regression that could cause your multiprocessor computer to stop responding (hang).

CAUSE

This problem occurs because of changes made in earlier hotfixes included an error in locking code. This error can cause your multiprocessor computer to "deadlock" or hang.

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.

MORE INFORMATION

These hotfix files should be replaced with the newer files.

Affected hotfixes are described by the following articles:

Q223450 TCP Initial Retransmission Timer Adjustment Added to Windows NT

Q224585 TCB Hash Function Modified to Improve Network Performance

Q230307 Slow Performance in TCP/IP When Reconnecting

Q230381 TCP/IP Dead Gateway Detection May Not Work if ARP Cache Empty

Q232512 TCP/IP May Retransmit Packets Prematurely

Additional query words: multi processor multi-processor

Keywords : kbbug4.00 kbfix4.00 NT4SP6Fix
Version : winnt:4.0 SP5
Platform : winnt
Issue type : kbbug