Microsoft KB Archive/896225

= You receive an &quot;Error 0x80072EE2&quot; or &quot;Error 0x80072EFD&quot; error message if you try to use your Windows XP-based client computer to access the Windows Update Web site =

PSS ID Number: 896225

Article Last Modified on 4/5/2005

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The information in this article applies to:

 Microsoft Windows Update, when used with:  Microsoft Windows XP Professional

 Microsoft Windows XP Home Edition 

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SYMPTOMS
If you try to use your Microsoft Windows XP-based client computer to access the Microsoft Windows Update Web site, you receive one of the following error messages:

Error 0x80072EE2

Error 0x80072EFD

This symptom occurs if your Windows XP-based client computer runs behind an Internet proxy server.

Additionally, if you view the contents of the %systemroot%\Windowsupdate.log file, you see an entry that is similar to the following entry:  +0100 1916 37c SendRequest failed with hr = 80072efd. Proxy List used: <(null)> Bypass List used : <(null)>



CAUSE
This issue occurs because Windows XP accesses the Windows Update Web site by using Microsoft Windows HTTP Services (WinHTTP). WinHTTP runs in the context of the local system. System services must have a proxy server manually defined or be able to detect proxy servers on the network.

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RESOLUTION
To resolve this issue, manually configure the proxy server or configure Web Proxy Auto Detect (WPAD) so that WinHTTP can locate the proxy server on the network. To do this, use one of the following methods.

How to configure one client computer
To configure one client computer, use one of the following methods.

You know the name of the proxy server that you are using

 * 1) Click Start, click Run, type cmd, and then click OK.
 * 2) At the command prompt, type proxycfg -p  :, and then press ENTER.
 * 3) At the command prompt, type exit, and then press ENTER.

You do not know the name of the proxy server that you are using
If you do not know the name of the proxy server that you are using, import the settings for the current user from the Internet Explorer proxy settings. To do this, follow these steps:
 * 1) Click Start, click Run, type cmd, and then click OK.
 * 2) At the command prompt, type proxycfg -u, and then press ENTER.
 * 3) At the command prompt, type exit, and then press ENTER.

How to configure multiple client computers
To configure multiple client computers, you must configure WPAD. To do this, follow the steps that are described in the following Microsoft Knowledge Base articles:

252898 How to enable Proxy Autodiscovery in Windows 2000

309814 How to configure Firewall and Web Proxy Client Autodiscovery in Windows 2000

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MORE INFORMATION
In ordinary circumstances, when you view the contents of the Windowsupdate.log file, you see an entry that is similar to the following entry: <pre class="fixed_text"> -0800   1020    50c Using ProxyList: Myproxy:80, ProxyBypass:

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