Every time that Windows Media Player 11 plays an audio file in Windows Vista, a handle leak in Lsm.exe may occur.

For example, if you leave Windows Media Player playing for a long time with the Repeat feature on, many handles may be leaked. These handles are leaked every time that Windows Media Player plays a song. In this scenario, the leaked handle count may grow to a large number. Therefore, the computer may become slow and unresponsive.

This problem occurs only when the computer is using a High Definition (HD) audio device. You must restart the computer to reclaim the leaked handles.

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Service pack information

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

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Hotfix information

A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

File information

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 item in Control Panel.

Windows Vista, x86-based versions

File name	File version	File size	Date	Time	Platform
Mmdevapi.dll	6.0.6000.20545	146,944	27-Feb-2007	07:07	x86
Update.mum	Not Applicable	1,998	27-Feb-2007	13:57	Not Applicable
X86_76e99c6ccae5fafb6c8db46fce49f7cd_31bf3856ad364e35_6.0.6000.20545_none_328dffecfab217e6.manifest	Not Applicable	699	27-Feb-2007	13:57	Not Applicable
X86_microsoft-windows-mmdeviceapi_31bf3856ad364e35_6.0.6000.20545_none_53815fb2d574dd8c.manifest	Not Applicable	10,651	27-Feb-2007	13:59	Not Applicable

Windows Vista, 64-bit versions

File name	File version	File size	Date	Time	Platform
Amd64_2947ba14bf8e9c3cd454a5b314fe5271_31bf3856ad364e35_6.0.6000.20545_none_3be919c57debdbaf.manifest	Not Applicable	703	27-Feb-2007	13:57	Not Applicable
Amd64_76e99c6ccae5fafb6c8db46fce49f7cd_31bf3856ad364e35_6.0.6000.20545_none_8eac9b70b30f891c.manifest	Not Applicable	701	27-Feb-2007	13:57	Not Applicable
Amd64_microsoft-windows-mmdeviceapi_31bf3856ad364e35_6.0.6000.20545_none_af9ffb368dd24ec2.manifest	Not Applicable	10,679	27-Feb-2007	14:05	Not Applicable
Mmdevapi.dll	6.0.6000.20545	202,752	27-Feb-2007	04:25	x64
Package_1_for_kb933245~31bf3856ad364e35~amd64~~6.0.1.0.mum	Not Applicable	2,009	27-Feb-2007	13:57	Not Applicable
Package_2_for_kb933245~31bf3856ad364e35~amd64~~6.0.1.0.mum	Not Applicable	1,790	27-Feb-2007	13:57	Not Applicable
Update.mum	Not Applicable	1,998	27-Feb-2007	13:57	Not Applicable

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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 Windows Vista Service Pack 1.

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For more information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base: For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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