Microsoft KB Archive/942423

Knowledge Base

FIX: You cannot play Windows Media content that is encoded by using the VC1 codec in Windows XP, in Windows Server 2003, or in Windows 2000

Article ID: 942423

Article Last Modified on 12/4/2007

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APPLIES TO

• Microsoft Windows Media Player 10
• Microsoft Windows Media Player 9 Series
• Microsoft Windows Server 2003, Standard Edition (32-bit x86)
• Microsoft Windows Server 2003, Standard x64 Edition
• Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
• Microsoft Windows Server 2003, Enterprise x64 Edition
• Microsoft Windows XP Professional
• Microsoft Windows XP Home Edition
• Microsoft Windows 2000 Professional Edition
• Microsoft Windows 2000 Enterprise Edition

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SYMPTOMS

Consider the following scenario in Windows XP, in Windows Server 2003, or in Microsoft Windows 2000:

• You try to play Windows Media content that is encoded by using the VC1 codec. Specifically, the content is encoded by using the WVC1 four character code (FOURCC).
• You are using Windows Media Player 10 or an earlier version.
• You have never installed Windows Media Player 11.
• You do not have Internet access.

In this scenario, you may not have the necessary codec to play the video content. And, you may receive the following error message:

Windows Media Player cannot play the file because the required video codec is not installed on your computer.

CAUSE

This problem occurs because the WVC1 decoder is not included together with Windows XP.

RESOLUTION

A hotfix that resolves this problem is available. The following files are available for download from the Microsoft Download Center:

For x86-based computers that are running Windows XP, Windows Server 2003, or Windows 2000 (all languages)

Download the WindowsMedia-KB942423-x86-INTL.exe package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 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 prevent any unauthorized changes to the file.

Note There is no 64-bit version of this hotfix for Windows XP. This hotfix package applies the 32-bit version of this hotfix on the 64-bit version of Windows XP.

For x64-based computers that are running Windows XP or Windows Server 2003 (all languages)

Download the WindowsMedia-KB942423-x64-INTL.exe package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 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 prevent any unauthorized changes to the file.

The global version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

File name	File version	File size	Date	Time	Platform
Wvc1dmod.dll	10.0.0.1218	1,184,984	12-Sep-2007	21:38	x86

Keywords: kbfix KB942423

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