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ITsVISTA KB-Link: KB960044

An audio application cannot play the latest non-Pulse Code Modulation (PCM) or encrypted PCM and non-PCM audio formats even after you install a High Definition Audio function driver on a Windows Vista-based or Windows Server 2008-based computer

You install a High Definition (HD) Audio function driver on a Windows Vista-based or Windows Server 2008-based computer. The driver can expose multiple non-Pulse Code Modulation (PCM) audio formats and some PCM or non-PCM audio formats that are encrypted.

However, you may notice that the audio application cannot play the following formats:

  • The latest non-PCM formats, such as Dolby True HD
  • Both PCM and non-PCM audio formats that are encrypted
There is a download that resolves this issue. See Hotfixes for details.
32-bit Download: Contact Microsoft
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB960044.

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