Windows 95 MSDLC32 Does Not Receive Multicast Packets

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This article was previously published under Q170736

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SYMPTOMS

A DLC program may not receive multicast packets in Windows 95 using Microsoft's 32-bit Data Link Control protocol (MSDLC32).

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CAUSE

MSDLC32 does not receive packets addressed to multicast addresses.

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STATUS

This issue is resolved by the following updated file for Windows 95 and OSR2:

Dlc.vxd version 4.10.995 (dated 6/18/97) and later

To install this update, follow these steps:

Download the Dlc32upd.exe file from the online service listed below to an empty folder.
In My Computer or Windows Explorer, double-click the Dlc32upd.exe file you downloaded in step 1.
Follow the instructions on the screen.

The following file is available for download from the Microsoft Download Center:

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Download Dlc32upd.exe now (http://download.microsoft.com/download/win95upg/updt_a/1.0/w95/en-us/dlc32upd.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.

The following files are installed by Dlc32upd.exe:

   File name     Version    Date/Time        Size     Destination folder
   ----------------------------------------------------------------------
   Dlc.vxd       4.10.995   6/18/97 3:31p    237,470  Windows\System

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

170737 (http://support.microsoft.com/kb/170737/EN-US/ ) Windows 95 MSDLC32 Does Not Receive Broadcast Packets

170736 (http://support.microsoft.com/kb/170736/EN-US/ ) Windows 95 MSDLC32 Does Not Receive Multicast Packets

159344 (http://support.microsoft.com/kb/159344/EN-US/ ) Fatal Exception in DLC Running Program from NetWare Server

148765 (http://support.microsoft.com/kb/148765/EN-US/ ) Availability of DLC Update for MSDLC32 Protocol

This issue is resolved in Microsoft Windows 98.

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MORE INFORMATION

A multicast address is associated with a group of network nodes or stations. Packets sent to a multicast address are expected to be received by all stations on the network segment or ring that have the specified multicast address registered.

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APPLIES TO

Microsoft Windows 95

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kbdownload kbapi kbnetwork KB170736

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Retired KB Content Disclaimer

This 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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