Microsoft KB Archive/905422

= A client computer fails with a &quot;0x8024400a&quot; error code when it retrieves new updates from a WSUS server that is running Windows Server 2003 Service Pack 1 =

Article ID: 905422

Article Last Modified on 12/3/2007

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APPLIES TO

 Microsoft Internet Information Services 6.0, when used with:  Microsoft Windows Server 2003, Standard x64 Edition

 Microsoft Windows Server 2003, Web Edition

 Microsoft Windows Server 2003, Standard Edition (32-bit x86)

 Microsoft Windows Server 2003, Enterprise x64 Edition</li></ul>

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems</li></ul>

 Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)</li></ul>

 Microsoft Windows Server 2003, Datacenter x64 Edition</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)</li></ul>

 Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems</li></ul>

 Microsoft Windows Server 2003, 64-Bit Datacenter Edition</li></ul> </li></ul>

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<div class="symptoms_section">

SYMPTOMS
A client computer cannot receive new updates or does not appear in the Administration Console when the computer points to a Microsoft Windows Server Update Services (WSUS) server. The WSUS server is running on a Microsoft Windows Server 2003 Service Pack 1-based computer. The Windows Update log may indicate that the client computer's connection to the WSUS server fails with a &quot;0x8024400a&quot; error code.

<div class="cause_section">

CAUSE
When you send a POST request to a server that is running Microsoft Internet Information Services (IIS) 6.0, IIS may send an &quot;HTTP 100 Continue&quot; response in the middle of the response stream. Sometimes, IIS incorrectly sends the &quot;HTTP 100 Continue&quot; response after IIS has sent the “HTTP 200 OK” response.

<div class="resolution_section">

RESOLUTION
To resolve this problem, install the hotfix that is described in the following Microsoft Knowledge Base article:

923507 The HTTP protocol stack in Windows Server 2003 sends a &quot;100 Continue&quot; packet to the client even though the HTTP request does not contain an &quot;Expect: 100-Continue&quot; header

<div class="status_section">

STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbtshoot kbfix kbbug KB905422

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