Windows Media Center does not correctly configure a combo TV tuner that supports both ATSC and NTSC signals on a Windows Vista-based computer

On a Windows Vista-based computer, you try to configure a combo TV tuner in Windows Media Center. This combo tuner supports both ATSC and NTSC signals. However, you experience the following problems:

• The combo tuner is not detected by Windows Media Center.
• Windows Media Center does not correctly configure the tuner when you use a manual tuner configuration.
• When you configure Windows Media Center to receive both over-the-air digital TV (DTV) and analog cable TV, you can view only the analog channels. This problem occurs even though the digital channels appear in the guide. When you try to watch one of the digital channels, you may receive the following error message:
  Cannot Play Program
  The channel may not be supported. If you cannot tune to any other channel, restart Windows Media Center or restart the computer, then try again.

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:

Hotfix information

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.

File information

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 about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base: For more information, click the following article number to view the article in the Microsoft Knowledge Base: