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Update to Windows 95 TCP/IP to Address Out-of-Band Issue

Retired KB ArticleThis article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
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Article ID:168747
Last Review:November 15, 2006
Revision:2.4
This article was previously published under Q168747

SYMPTOMS

On a computer running Microsoft Windows 95 (all releases) using the Microsoft TCP/IP protocol, the following error message may occur when certain data is received over the network:
Fatal exception 0E at 0028:<address> in VxD MSTCP(01) + 000041AE.
This was called from 0028:<address> in VxD NDIS(01) + 00000D7C.
After this error message occurs, the computer may not receive further network data until Windows is restarted.

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CAUSE

This error message can occur if certain, very specific, "out-of-band" data packets are deliberately sent to the server during a TCP/IP session.

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RESOLUTION

This issue is resolved by the following updated files for Windows 95 (all releases):
•Vtcp.386 version 4.00.0954 (dated 05/20/97) and later
•Vnbt.386 version 4.00.0959 (dated 05/15/97) and later
To install these updated files, follow these steps:
1.Download the Vtcpupd.exe file to an empty folder.
2.In My Computer or Windows Explorer, double-click the Vtcpupd.exe file you downloaded in step 1.
3.Follow the instructions on the screen.
The following file is available for download from the Microsoft Download Center:
Download Vtcpupd.exe now (http://download.microsoft.com/download/win95upg/patch1/1/w95/en-us/vtcpupd.exe)
For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 (http://support.microsoft.com/kb/119591/EN-US/) How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

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MORE INFORMATION

The following files are installed by Vtcpupd.exe: 
   File name     Version    Date/Time        Size     Destination folder
   ---------------------------------------------------------------------
   Vtcp.386      4.00.0954  05/20/97 09:54a  47,413   Windows\System
   Vnbt.386      4.00.0959  05/15/97 09:59a  95,497   Windows\System



For additional information about issues resolved by updates to these components, see the following articles in the Microsoft Knowledge Base:
163770 (http://support.microsoft.com/kb/163770/EN-US/) Cannot Log On to Windows NT Domain w/ DNS Name Resolution Only
154579 (http://support.microsoft.com/kb/154579/EN-US/) Slow TCP/IP Performance When Resuming Large Data Transfer
152791 (http://support.microsoft.com/kb/152791/EN-US/) Error Message: No Domain Server Was Available...
For additional information about a similar issue with Microsoft Windows NT, see the following article in the Microsoft Knowledge Base:
143478 (http://support.microsoft.com/kb/143478/EN-US/) Stop 0A in TCPIP.SYS When Receiving Out Of Band (OOB) Data

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APPLIES TO
•Microsoft Windows 95

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Keywords: 
kbhotfixserver kbqfe kbdownload kberrmsg kbfile kbgraphxlinkcritical kbnetwork KB168747

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