Multimedia device does not shut down correctly if you unplug the device during streaming (816650)


The information in this article applies to:

  • Microsoft Windows XP Home Edition
  • Microsoft Windows XP Home Edition SP1
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional SP1

SYMPTOMS

If you unplug a USB audio device that is based on the port class system driver (PortCls.Sys) while the device is streaming, PortCls.Sys does not correctly handle the close notification (IRP_MJ_CLOSE) that occurs after the surprise removal notification (IRP_MN_SURPRISE_REMOVAL) is generated. This behavior prevents PortCls.Sys from correctly closing the stream and from performing the handle cleanup.

Additionally, the IRP_MN_REMOVE_DEVICE notification is not generated because open handles remain.

RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Windows XP. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

322389 How to obtain the latest Windows XP service pack

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows XP service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question. The English version of this hotfix has the file attributes (or later file attributes) 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.
   Date         Time   Version         Size      File name
   ----------------------------------------------------------
   21-Mar-2003  11:05  5.1.2600.1189   132,224   Portcls.sys

STATUS

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.

MORE INFORMATION

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Modification Type:MinorLast Reviewed:10/12/2005
Keywords:kbHotfixServer kbQFE kbWinXPsp2fix kbQFE kbWinXPpreSP2fix kbfix kbbug KB816650 kbAudDeveloper kbAudOEM kbAudITPRO
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