The Hbaapi.dll module leaks two handles when the module is unloaded on a system that is running Windows Server 2003, Windows Vista Service Pack 1, or Windows Server 2008

Consider the following scenario:

• You have a system that is running Windows Server 2003, Windows Vista Service Pack 1 (SP1), or Windows Server 2008.
• An application calls the FreeLibrary function to unload the Hbaapi.dll module.

In this scenario, you experience mutex handle leaks.

This issue occurs because the Hbaapi.dll module creates two mutex objects when the system calls the DllMain function by using a DLL_PROCESS_ATTACH notification. However, the Hbaapi.dll module never closes those handles. Therefore, every time that the Hbaapi.dll module unloads, the two handles are leaked.

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.

Prerequisites

To apply this hotfix, you must have Windows Server 2003 SP1, Windows Server 2003 Service Pack 2 (SP2), Windows Server 2008, or Windows Vista SP1 installed.

Note Service Pack 1 is integrated into the original release version of Windows Server 2008.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

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.

Note The .manifest files and the .mum files that are installed in each environment are listed separately in the "Additional file information for Windows Server 2008 and for Windows Vista" section. These files and their associated .cat (security catalog) files are critical to maintaining the state of the updated component. The .cat files are signed with a Microsoft digital signature. The attributes of these security files are not listed.

Windows Server 2003 Service Pack 1 x86

Windows Server 2003 Service Pack 2 x86

Windows Server 2003 x64

Windows Server 2003 Service Pack 2 x64

Windows Server 2003 Service Pack 1 IA-64

Windows Server 2003 Service Pack 2 IA-64

For all supported 32-bit versions of Windows Server 2008 and of Windows Vista

For all supported 64-bit versions of Windows Server 2008 and of Windows Vista

For all supported Windows Server 2008 Itanium-Based Systems operating systems

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Additional file information for Windows Server 2008 and of Windows Vista

Additional files for all supported 32-bit versions of Windows Server 2008 and of Windows Vista

Additional files for all supported 64-bit versions of Windows Server 2008 and of Windows Vista

Additional files for all supported Windows Server 2008 Itanium-Based Systems operating systems

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