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On a Windows Vista-based computer or on a Windows Server 2008-based computer, the Microsoft ISATAP adapter appears with a yellow exclamation mark next to it in Device Manager, and you also receive an error message

Article ID:932520
Last Review:March 15, 2007
Revision:1.4

SYMPTOMS

On a Windows Vista-based computer or on a Windows Server 2008-based computer, the Microsoft ISATAP adapter appears with a yellow exclamation mark (!) next to it in Device Manager. Additionally, when you open the properties dialog box for the device, you receive an error message that resembles the following:
Windows cannot load driver (Code 31)

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RESOLUTION

You can safely ignore this error message. This error message does not indicate a problem with the adapter. The adapter will continue to work correctly.

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STATUS

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

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MORE INFORMATION

The Microsoft ISATAP device Inter Site Automatic Tunneling Address Protocol is used to help enterprises transition to an IPv6 infrastructure. The ISATAP adapter encapsulates IPv6 packets by using an IPv4 header. This functionality enables the client to transport IPv6 traffic over an IPv4 infrastructure. This approach lets organizations slowly migrate to an IPv6 infrastructure without having to spend excessive time and financial resources to convert to the new infrastructure.

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APPLIES TO
Windows Vista Ultimate
Windows Vista Starter
Windows Vista Home Premium
Windows Vista Home Basic
Windows Vista Enterprise
Windows Vista Business 64-bit Edition
Windows Vista Business
Windows Vista Ultimate 64-bit Edition
Windows Vista Home Premium 64-bit Edition
Windows Vista Home Basic 64-bit Edition
Windows Vista Enterprise 64-bit Edition
Microsoft Internet Security and Acceleration Server 2004 Enterprise Edition
Microsoft Internet Security and Acceleration Server 2004 Standard Edition
Microsoft Internet Security and Acceleration Server 2006 Enterprise Edition
Microsoft Internet Security and Acceleration Server 2006 Standard Edition
Windows Vista Service Pack 1
Windows Server 2008 Standard
Windows Server 2008 Enterprise
Windows Server 2008 Datacenter
Windows Server 2008 for Itanium-Based Systems
Windows Server 2008 Standard without Hyper-V
Windows Server 2008 Enterprise without Hyper-V
Windows Server 2008 Datacenter without Hyper-V

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Keywords: 
kbtshoot kbprb kbexpertisebeginner KB932520

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