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Memory Leak in Keyboard and Mouse Class Drivers When You Unplug and Plug In USB Keyboard or Mouse

Article ID: 278323 - View products that this article applies to.

This article was previously published under Q278323

SYMPTOMS

After you unplug and plug in a Universal Serial Bus (USB) keyboard or mouse several times (approximately 42), the system stops sending I/O system event error messages to the event log.

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CAUSE

This behavior is caused by a problem in the class drivers. The class drivers are not deallocating allocated system event memory when a device is unplugged.

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RESOLUTION

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 the Microsoft Knowledge Base:

260910

(http://support.microsoft.com/kb/260910/EN-US/ )

How to Obtain the Latest Windows 2000 Service Pack

The English version of this fix should have the following file attributes or later:

   Date      Time    Version        Size    File name
   -----------------------------------------------------
   5/29/2001 09:28a  5.0.2195.3649  24,400  Kbdclass.sys
   5/29/2001 09:28a  5.0.2195.3649  21,648  Mouclass.sys

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Windows 2000 Service Pack 3.

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MORE INFORMATION

For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173

(http://support.microsoft.com/kb/265173/EN-US/ )

The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861

(http://support.microsoft.com/kb/296861/EN-US/ )

Use QChain.exe to Install Multiple Hotfixes with One Reboot

For additional information about how to install Windows 2000 and Windows 2000 hotfixes at the same time, click the article number below to view the article in the Microsoft Knowledge Base:

249149

(http://support.microsoft.com/kb/249149/EN-US/ )

Installing Microsoft Windows 2000 and Windows 2000 Hotfixes

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