Microsoft KB Archive/929539

= Error message when you try to play a DVD on a Windows Vista-based computer: &quot;Media Center cannot play this DVD. The DVD may be in use by another application or it is copy-protected.&quot; =

Article ID: 929539

Article Last Modified on 1/10/2007

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APPLIES TO


 * Windows Vista Home Premium
 * Windows Vista Ultimate
 * Windows Vista Home Premium 64-bit edition
 * Windows Vista Ultimate 64-bit edition

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SYMPTOMS
When you try to play a DVD in Windows Media Center on a Windows Vista-based computer, you receive the following error message:

Media Center cannot play this DVD. The DVD may be in use by another application or it is copy-protected.



CAUSE
This problem occurs if one or more of the following conditions are true:
 * You are trying to play a DVD that contains protected content.
 * A high-definition television set is connected to the computer through a component video cable.
 * Your graphics card detects that the television is set to a resolution of 720p or of 1080i.



RESOLUTION
To resolve this problem, reduce the Windows Media Center screen resolution to 480p or to 480i. To do this, follow these steps.

Note Because the manufacturer may have customized the installation of Windows Media Center in Windows Vista, the following steps may be different on your particular computer.
 * 1) Minimize Windows Media Center.
 * 2) Open the Personalization item in Control Panel. To do this, click Startvistastartbutton.jpg], type personalization in the Start Search box, and then click Personalization in the Programs list.
 * 3) Click Display Settings.
 * 4) Drag the slider to specify the screen resolution that you want.

Note You do not have to change the resolution of the television set.

Alternatively, check the hardware manufacturer's documentation for more information about how to correctly reduce the Windows Media Center screen resolution.



MORE INFORMATION
For more information about this issue if it occurs on a Hewlett-Packard (HP) Digital Entertainment Center, visit the following HP Web site:

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&lang=en&cc=us&product=451458&dlc=en&docname=c00257505#N10A60

Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information. 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.

Keywords: kbexpertisebeginner kbtshoot kbprb KB929539

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