Microsoft Download Center Archive

Update for the IDirectPlay4 API of Microsoft DirectX 8.1x (DirectPlay) (KB839643)

  • Published:
  • Version: 1.0
  • Category: Security Patch
  • Language: English

An attacker can send a malformed packet to anyone running the IDirectPlay4 API for Microsoft DirectPlay and cause it to crash.

A denial of service vulnerability exists in the implementation of the IDirectPlay4 API of Microsoft DirectPlay due to a lack of robust packet validation.
If a user is running a networked DirectPlay application, an attacker who successfully exploited this vulnerability could cause the DirectPlay application fail. The application would need to be restarted in order to resume functionality.

Knowledge Base Articles:

Files

Status: Deleted

This download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to April 2023.

Files
DirectX81-KB839643-x86-ENU.EXE
  • SHA1: a8177992611be18ee8a93fbbc0e4389ce815b450
  • Size: 424 KB

File sizes and hashes are retrieved from the Wayback Machine’s indexes. They may not match the latest versions of files hosted on Microsoft servers.

System Requirements

Operating Systems: Windows 2000, Windows 2000 Service Pack 4, Windows 2000 Service Pack 3, Windows 2000 Advanced Server, Windows 2000 Server, Windows 2000 Service Pack 2

Requires DirectX 8.1. DirectX8.1a, or DirectX 8.1b to be installed.

Installation Instructions

  1. Click the Download button on this page to start the download, or choose a different language from the drop-down list and click Go.
  2. Do one of the following:
  • To start the installation immediately, click Open or Run this program from its current location.
  • To copy the download to your computer for installation at a later time, click Save or Save this program to disk.

What is this?

Microsoft regularly deletes downloads for prior versions of Windows, Office, Visual Studio, SQL Server, and countless other products from their Download Center website. Legacy Update catalogues downloads that have been deleted from Microsoft Download Center since 2012.

Check our Microsoft Download Center Archive homepage or click Random to discover more downloads.

Deleted downloads are no longer supported by Microsoft, and may have known security vulnerabilities. After installing, check for updates using Legacy Update.

This page was generated from a snapshot of the Microsoft Download Center made on .
FamilyId: 52139fdd-7926-4dae-a872-f67b1b55f2d0