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Consider the following scenario. On a computer that is running Windows Vista, you open the Sound item in Control Panel. Then, you open the Properties dialog box for an installed device that uses one of the following interface formats:
High-Definition Multimedia Interface (HDMI)
Sony/Philips Digital Interface (S/PDIF)
However, when you click the Supported Formats tab in the Properties dialog box for the device, you notice that all the check boxes are unexpectedly selected. For example, the following check boxes are selected:
Microsoft WMA Audio
You experience this problem even though the following conditions are true:
You did not select all the check boxes.
The device does not support all these selected formats.
When this problem occurs, you may not receive sound from the device.
This problem occurs in the following scenario:
After you click the Supported Formats tab for the device, you click another tab in the Properties dialog box. Then, you click Cancel.
You reopen the Properties dialog box for the device, and then you click the Supported Formats tab again.
In this scenario, the settings that were previously configured on the Supported Formats tab are not maintained. Windows Vista incorrectly selects all the check boxes.
Service pack information
To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:
Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.
The English 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.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Windows Vista Service Pack 1.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.