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Why do I get a "Cannot play the file"(C00D11BA) message?
Sounds like Windows Media Player is having a problem with your sound card or sound controller. Do the following to try to fix this error:
Make sure that a sound device is installed on your computer; if one isn't, just install one. In most cases, Windows will automatically detect the new hardware and install the necessary software drivers. If Windows does not automatically install the software drivers, run the Add Hardware Wizard to install them yourself (click Start, click Control Panel, and then double-click Add Hardware).
Another program is using the sound device, and preventing the Player from accessing it. Close all other programs so that the Player is the only program running, and then try to play the file again.
The software drivers for your sound device may be missing or corrupted. Try reinstalling the most recent software drivers for your sound device by scanning for updates on the Windows Update Web site or by going to your sound device manufacturer's Web site.
The Player may be using a version of Microsoft DirectX that is incompatible with the hardware features on your sound device. (This may explain why you can hear sound when you use some software programs, but not when you use the Player.) Install the most current version of DirectX by going to the DirectX Web page.
If none of the previous suggestions work, refer to your sound device manufacturer's documentation or run the Sound Device Troubleshooter to see if the device is functioning properly:
In the Player, on the Tools menu, click Options.
On the Devices tab, in the list of devices, click Speakers, and then click the Properties button.
On the Speakers tab, click the Advanced button.
On the Hardware tab, double-click your sound device in the list of hardware devices and then view its properties, or click the Troubleshoot button to help you pinpoint any problems the device might be having.
Note that in some cases, this error can be caused by improperly configured speaker or sound device properties. For more information, see the following question.
