Microsoft KB Archive/888111

= Universal Audio Architecture (UAA) High Definition Audio class driver version 1.0a available for Windows XP, Windows Server 2003, and Windows 2000 =

Article ID: 888111

Article Last Modified on 11/20/2006

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APPLIES TO


 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Media Center Edition 2002
 * Microsoft Windows XP Professional
 * Microsoft Windows XP Professional
 * Microsoft Windows 2000 Professional Edition

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Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

Note This hotfix is not available for download. To acquire this hotfix, contact Microsoft Product Support Services. For more details, see the &quot;More Information&quot; section.



INTRODUCTION
Version 1.0a of the Universal Audio Architecture (UAA) High Definition Audio class driver for Microsoft Windows has been released. This release supports the High Definition Audio and Modem implementations that are known to Microsoft as of August 1, 2004. This is the second version of this driver.

Version 1.0a of the UAA High Definition Audio class driver does not work on High Definition Audio implementations that were disclosed to Microsoft after August 1, 2004.

You must uninstall version 1.0 of the UAA High Definition Audio class driver before you install version 1.0a. For more information about version 1.0 of the UAA High Definition Audio class driver, click the following article number to view the article in the Microsoft Knowledge Base:

835221 Universal Audio Architecture (UAA) High Definition Audio class driver available for Windows Server 2003, Windows XP, and Window 2000



Update information
A supported feature that modifies the product's default behavior is now available from Microsoft, but it is only intended to modify the behavior that this article describes. Apply it only to systems that specifically require it. This feature may receive additional testing. Therefore, if the system is not severely affected by the lack of this feature, we recommend that you wait for the next service pack that contains this feature.

To obtain this feature immediately, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
This driver is designed to work with the following operating systems:
 * The original release version of Microsoft Windows Server 2003

Note This driver does not work with Windows Server 2003 Service Pack 1 or a later service pack.
 * Microsoft Windows XP with Service Pack 1 (SP1) or with Service Pack 2 (SP2)
 * Microsoft Windows 2000 with Service Pack 4 (SP4)

Restart requirement
You may have to restart your computer after you apply this update if the operating system components that this update replaces are being used when you install the update.

File information
The English version of this update 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.

Improvements for users

 * Easier installation of audio peripherals
 * Easier installation of audio drivers
 * Better system stability
 * Better performance
 * Glitch-free audio
 * Improved security of the content that you want to help protect
 * Fewer vendor-supplied drivers
 * Less need to upgrade drivers
 * Guaranteed basic audio support for UAA-compliant devices

Improvements for OEMs and hardware manufacturers

 * Less software development, testing, and support
 * Less exposure to product support calls and to product returns
 * Easier phase-out of products that are at the &quot;end of life&quot;

If you install, remove, and then re-install this update, the update is no longer listed in Add or Remove Programs in Control Panel. Therefore, you cannot remove this update from your computer. To work around this problem, follow these steps.

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.  Click Start, click Run, type regedit in the Open box, and then click OK. Locate and then click the following subkey in the registry:

 On the Edit menu, click Delete. Click Yes, and then exit Registry Editor.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

