This article was previously published under Q289236
This article has been archived. It is offered "as is" and will no longer be updated.
When you try to run a DirectSound-enabled program from the DVD drive on a Dell, Compaq, or Gateway computer, the audio does not work correctly.
This behavior occurs because the Portcls.sys file does not permit the use of non-PCM wave formats. DirectSound always interfaces with the Portcls.sys file, which only supports PCM. Software DVD players require the use of non-PCM formats to play content such as digital audio.
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Microsoft has confirmed that this is a problem in Microsoft Windows 2000.
This problem was first corrected in Windows 2000 Service Pack 2.