Microsoft KB Archive/174863

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DNS Name Queries Only Sent Through One Network Adapter


The information in this article applies to:

  • Microsoft Windows 95
  • Microsoft Windows 95 OEM Service Release, versions 1, 2, 2.1


Windows 95 may be unable to locate and connect to some network resources when multiple network adapters are installed on the computer running Windows 95.

For example, if Dial-Up Networking is used in conjunction with a Local Area Network (LAN), you may be unable to connect to resources on the LAN while a Dial-Up Networking connection is active.


When Windows 95 attempts to resolve a Transmission Control Protocol/Internet Protocol (TCP/IP) Domain Name Service (DNS) network name, only one network adapter is used to send the DNS name queries even though there may be more than one network adapter installed. Thus, DNS name queries for a resource on one network may be sent to the wrong network. The result is that the name is not known and cannot be resolved.


This issue is resolved by the following updated file for Windows 95 and OSR2, and later versions of this file:

   WINSOCK.DLL  version 4.00.1114  dated 6/24/97  42,480 bytes
   WSOCK32.DLL  version 4.00.1114  dated 6/24/97  66,560 bytes 

Versions of these files which resolve this problem are included in the Windows Sockets 2.0 update for Windows 95. For information about obtaining this update, see the following article in the Microsoft Knowledge Base:

Q182108 Availability of Windows Sockets 2.0 for Windows 95


Microsoft has confirmed this to be a problem in Microsoft Windows 95 and OEM Service Release 2 (OSR2). 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.


For additional information about issues resolved by updates to these components, please see the following articles in the Microsoft Knowledge Base:

Q170619 Windows 95 ServiceProvider Priority Values Not Applied

Q169035 Windows 95 WinSock Update to Improve Multihoming Support

Q163329 Fatal Exception 0E in WSIPX Using Windows Sockets Program

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:

Keywords : kbnetwork osr1 osr2 win95 kbAPI kbSDKPlatform kbWinsock kbGrpDSNet
Issue type : kbprb
Technology : kbWin95search kbOPKSearch kbWin95 kbWin95OPKOSR2 kbWin95OPKOSR1 kbWin95OPKOSR210

Last Reviewed: January 31, 2001
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