Microsoft KB Archive/142254

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Problems Installing Network Protocol That Uses TDI Interface

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Q142254

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The information in this article applies to:


 * Microsoft Windows 95

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SYMPTOMS
Windows 95 may stop responding (hang) with different results on different Computers when you try to install a network protocol that uses the TDI interface.

This problem occurs only if the Microsoft TCP/IP protocol is already installed when you try to add the other protocol, or when you try to add the Microsoft TCP/IP protocol after installing another protocol that uses the TDI interface.

CAUSE
The TDI interface provider (Vtdi.386) included with Windows 95 supports only one protocol using that interface. The TCP/IP protocol included with Windows 95 uses the TDI interface, causing a conflict if you install an additional protocol that uses the TDI interface.

RESOLUTION
This issue is resolved by the following updated file for Windows 95, and later versions of this file:

  VTDI.386  version 4.00.951  dated 12/4/95  5,711 bytes The updated version of this file is included in the Windows Sockets 2.0 update for Windows 95. For information on obtaining this update, see the following article in the Microsoft Knowledge Base:

"Q182108 Availability of Windows Sockets 2.0 for Windows 95"

STATUS
Microsoft has confirmed this to be a problem in Microsoft Windows 95. An update to address this problem is now available, but is not fully regression tested and should be applied only to computers experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft does not recommend implementing this update at this time. Contact Microsoft Technical Support for additional information about the availability of this update.

This issue is resolved in Microsoft Windows 98.

MORE INFORMATION
This problem was reported with the ICL Workgroup OSI protocol by International Computers Limited.

For additional information about the function of the TDI layer, please see the following articles in the Microsoft Knowledge Base:

Q101871 Information on the TDI Layer

Q128233 Comparison of Windows NT Network Protocols

For additional information about Windows 95 updates, please see the following article in the Microsoft Knowledge Base:

"Q161020 Implementing Windows 95 Updates" Additional query words: hang

Keywords : kb3rdparty kbnetwork kbpolicy win95

Issue type : kbprb

Technology : kbWin95search kbWin95