Microsoft KB Archive/833766

= You receive a 0x800A01AD error message while you access the Windows Update Web site =

Article ID: 833766

Article Last Modified on 1/18/2006

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows Millennium Edition
 * Microsoft Windows 98 Second Edition

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SYMPTOMS
When you try to access the Microsoft Windows Update Web site, you may receive the following error message:

Windows has encountered an error and cannot display the requested page.

You may also receive the following error message:

0x800a01AD ActiveX component can't create object.

You may also receive the following entry in the Windows Update.log file: Error    IUENGINE       Determining machine configuration (Error 0x80040154: Class not registered)



CAUSE
This issue occurs because any one of the following conditions is true:
 * The Microsoft XML Parser (MSXML) 3.0 Service Pack 4 (SP4) is not installed.
 * The MSXML program files are incorrectly registered.



RESOLUTION
To resolve this problem, you can try any one of the following methods.

Register the MSXML program files
To register the MSXML files, follow these steps:

Note You may not have installed the files that are listed in steps 4 and 6 on your computer. If you do not have one of these files, when you try to register the file, you will receive an error message that is similar to the following error message:

LoadLibrary(&quot; .dll&quot;) failed - The specified file name could not be found.

You can ignore this error message and go to the next step.

Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.  Click Start, point to All Programs, point to Accessories, and then click Command Prompt. In the Command Prompt window, type Regsvr32 C:\Windows\System32\Msxml.dll, and then press ENTER. When you receive the following message, click OK:

DllRegisterServer in C:\Windows\System32\Msxml.dll DLL succeeded.

 Type Regsvr32 C:\Windows\System32\Msxml2.dll, and then press ENTER. When you receive the following message, click OK:

DllRegisterServer in C:\Windows\System32\Msxml2.dll DLL succeeded.

 Type Regsvr32 C:\Windows\System32\Msxml3.dll, and then press ENTER.</li> When you receive the following message, click OK:

DllRegisterServer in C:\Windows\System32\Msxml3.dll DLL succeeded.

</li> Close the Command Prompt window.</li></ol>

Install MSXML 3.0 SP4
To install MSXML 3.0 SP4, visit the following Microsoft Web site. Follow the instructions on the Web site to make sure that the service pack is installed correctly:

http://www.microsoft.com/downloads/details.aspx?FamilyID=28494391-052b-42ff-9674-f752bdca9582

Additional query words: IE Winup

Keywords: kbwindowsupdate kbprb KB833766

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