FIX: MIDI application stops responding after sudden removal of MIDI device

When you unplug the universal serial bus (USB) cable while playing or while recording with the USB Musical Instrument Digital Interface (MIDI) device for Turtle Beach, the MIDI application may stop responding.

This problem occurs because the audio-class driver does not correctly cancel the I/O Request Packets (IRPs) if a device is unplugged. Even if the audio-class driver does cancel the IRPs, the Wdmaud.drv driver still is unaware that a change is made and continues to block any action. The Wdmaud.drv driver waits for the IRPs to complete. This problem causes certain MIDI APIs to stop responding while waiting for the completion thread to exit. The completion thread never exits.

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft Windows XP. For additional 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 fix has the file attributes (or later) 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 tool 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 Microsoft Windows XP Service Pack 2.

For additional information about a related fix that must be installed before this package, click the following article number to view the article in the Microsoft Knowledge Base: For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base: For additional information, click the following article number to view the article in the Microsoft Knowledge Base: