The Family attribute of the Win32_Processor WMI class returns incorrect values for some processors that run on a Windows Server 2003-based computer

The Family attribute of the Win32_Processor Windows Management Instrumentation (WMI) class returns incorrect values for some processors that run on a Microsoft Windows Server 2003-based computer. This class returns a value of 0xB9 (185) for the AMD64 Athlon 64 Processor family. The correct value is 0x83 (131).

The current AMD64 Family attribute value for the Win32_Processor class is hard-coded at 0xB9 (185). This value corresponds to the Intel Pentium M processor in the System Management BIOS (SMBIOS) Reference Specification standard.

Service pack information

To resolve this problem, obtain the latest service pack for Windows Server 2003. For more 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.

Prerequisites

You must have Windows Server 2003 Service Pack 1 (SP1) installed to apply this hotfix.

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.

Windows Server 2003 with SP1, x86-based versions

Windows Server 2003 with SP1, Itanium-based versions

Windows Server 2003 with SP1, x64-based versions

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 Server 2003 Service Pack 2.

This hotfix has corrected the following values to comply with the current SMBIOS Reference Specification standard:To obtain the SMBIOS Reference Specification, visit the following Distributed Management Task Force (DMTF) Web site:For more information about the Win32_Processor class, visit the following Microsoft Web site:The Win32_Processor class does not distinguish among the following AMD families:

• Athlon
• Opteron
• Sempron
• Turion

After you apply this hotfix, all 64-bit AMD processors are identified by using a Family attribute value of 0x83 (131).

You can use the following Microsoft Visual Basic script to retrieve the Family attribute values of the processors that are installed on a computer. The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.