Microsoft KB Archive/836941

= You may receive an &quot;Error 0x80072EE2,&quot; &quot;Error 0x80072EE7,&quot; &quot;Error 0x80072EFD,&quot; &quot;Error 0x80072F76,&quot; or &quot;Error 0x80072F78&quot; error message when you try to use the Windows Update Web site or the Microsoft Update Web site =

Article ID: 836941

Article Last Modified on 12/5/2007

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APPLIES TO


 * Microsoft Windows Update
 * Microsoft Update

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SYMPTOMS
When you try to use the Microsoft Windows Update Web site or the Microsoft Update Web site, you may receive one of the following error messages:

Error 0x80072EE2

Error 0x80072EE7

Error 0x80072EFD

Error 0x80072F76

Error 0x80072F78

Additionally, the %SYSTEMROOT%\Windowsupdate.log file may have entries that are similar to the following entry:

005-06-01 18:31:12  992  158  Misc WARNING: Send failed with hr = 80072ee2. 005-06-01 18:31:12  992  158  Misc WARNING: SendRequest failed with hr = 80072ee2. Proxy List used: <(null)> Bypass List used : <(null)> Auth Schemes used : <> 005-06-01 18:31:12  992  158  Misc WARNING: WinHttp: SendRequestUsingProxy failed for 005-06-01  18:31:12  992  158  Misc . error 0x80072ee2 005-06-01 18:31:12  992  158  Misc WARNING: WinHttp: SendRequestToServerForFileInformation MakeRequest failed. error 0x80072ee2 005-06-01 18:31:12  992  158  Misc WARNING: WinHttp: SendRequestToServerForFileInformation failed with 0x80072ee2 005-06-01 18:31:12  992  158  Misc WARNING: WinHttp: ShouldFileBeDownloaded failed with 0x80072ee2 005-06-01 18:31:12  992  158  Misc WARNING: DownloadFileInternal failed for http://download.microsoft.com/v6/windowsupdate/redir/wuredir.cab: error 0x80072ee2 WARNING: Send failed with hr = 80072efd.



CAUSE
These errors indicate that the Windows Update client did not receive a response from the Windows Update or Microsoft Update Web site. This may be caused by programs that are running on the client computer or by general network-related failures.



RESOLUTION


Guided Help to resolve errors on the Windows Update or Microsoft Update Web site
Guided Help is available to resolve error messages on the Windows Update or the Microsoft Update Web site. Guided Help can automatically perform the steps for you.

The actions that this Guided Help performs cannot be undone after Guided Help is finished.

For more information about Guided Help, click the following article number to view the article in the Microsoft Knowledge Base:

915092 Description of Guided Help for Microsoft Knowledge Base articles

Requirements to install and to use this Guided Help

 * You must be logged on to Windows by using a computer administrator account to install and to use this Guided Help.
 * You must be running Windows XP Home Edition, Windows XP Professional, Windows XP Media Center Edition, or Windows XP Tablet PC Edition to install and to use this Guided Help.

You must first download Guided Help. To start, click the following link. Download Guided Help

Manual steps to resolve error messages on the Windows Update or Microsoft Update Web site
To manually resolve this issue, use method 1 or method 2.

Step 1: Verify Internet connectivity
Make sure that you can successfully access other Web sites. If you can successfully access other Web sites, your Internet connection is working correctly.

Step 2: Verify your personal firewall program settings
If you have a personal firewall program installed, you might have to reconfigure or update the personal firewall program. The Windows Update client and the Microsoft Update client run in an instance of Svchost.exe. This Svchost.exe instance requires access to the Internet. For more information about how to reconfigure or update your firewall program, see the documentation that was included with the program, view the Help files for your program, or contact the program vendor. For information about how to contact the program vendor, click the appropriate article number in the following list to view the article in the Microsoft Knowledge Base:

65416 Hardware and software vendor contact information, A-K

60781 Hardware and software vendor contact information, L-P

60782 Hardware and software vendor contact information, Q-Z

To troubleshoot and ensure any Firewall Programs you have running are not interfering with windows update try the following steps.

Important Before you disable the firewall for troubleshooting, turn on the Windows XP Internet Connection Firewall. To do this, follow these steps:
 * 1) Click Start, click Control Panel, double-click Networking and Internet Connections, and then click Network Connections.
 * 2) Right-click the connection on which you want to turn on the Internet Connection Firewall, and then click Properties.
 * 3) On the Advanced tab, click the box to select the option to protect my computer or network.

Temporarily disable your Firewall program and see if you can now access the Microsoft Windows Update Website. Even though you may have had a Firewall running for some time without any previous problems, new updates to the firewall program may create issues.

Step 3: Disable software accelerator programs
Disable any software accelerator programs. Examples of these programs are file download accelerators and internet speed accelerators.

Step 4: Add the Windows Update Web site and the Microsoft Update Web site to the Trusted Sites list
Add the Windows Update Web site and the Microsoft Update Web site to the Trusted Sites list in Internet Explorer. To do this, follow these steps:
 * 1) Start Microsoft Internet Explorer.
 * 2) On the Tools menu, click Internet Options.
 * 3) Click the Security tab, and then click Trusted Sites.
 * 4) Click Sites, and then click to clear the Require server verification (https:) for all sites in this zone check box.
 * 5) In the Add this Web site to the zone box, type the following addresses, clicking Add after you type each address:
 * 6) * http://update.microsoft.com
 * 7) * http://download.windowsupdate.microsoft.com
 * 8) Click OK two times.

Step 5: Remove entries for Windows Update and Microsoft Update from the hosts file
Some programs may modify the hosts file to control DNS name resolution. Sometimes, an entry for the Windows Update Web site or for the Microsoft Update Web site may exist in the hosts file. To remove these entries from the hosts file, follow these steps:  Click Start, click Run, type notepad %windir%\system32\drivers\etc\hosts, and then click OK.

Note If you are prompted to choose a program to open the hosts file with, click Notepad, click to select the Always use the selected program option, and then click OK. In Notepad, configure any lines in the hosts file that contain entries for Windows Update so that they are not read when the file is accessed. To do this, place the number sign (#) in front of any line that contains &quot;microsoft&quot; and &quot;update.&quot; For example, add the number sign (#) to the beginning of the following entries:  # 64.4.21.125 http://update.microsoft.com # 64.4.21.125 http://windowsupdate.microsoft.com</ul> </li> Remove any lines that contain entries for Windows Update or for Microsoft Update. For example, remove the following entry if the entry exists:

http://update.microsoft.com

</li> On the File menu, click Save.</li> Exit Notepad.</li> Restart the computer.

Note If you do not want to restart the computer, you can also flush the DNS resolver cache. To do this, follow these steps: <ol style="list-style-type: lower-alpha;"> Click Start, click Run, type cmd, and then click OK.</li> At the command prompt, type ipconfig /flushdns, and then press ENTER.</li></ol> </li></ol>

Step 6: Remove the proxy server entry from the WinHTTP proxy configuration
If you are not located in a corporate network, or if you do not use a proxy server to connect to the Internet, clear the WinHTTP proxy configuration. To do this, follow these steps: <ol> Open Internet Explorer.</li> On the Tools menu, click Internet Options.</li> Click the Connections tab, and then click LAN Settings.</li> In the Local Area Network (LAN) Settings dialog box, click to select the Automatically detect settings check box, and then click OK.</li> Quit Internet Explorer.</li> Click Start, click Run, type cmd, and then click OK.</li> Type the following commands. Press ENTER after each command. <ol style="list-style-type: lower-alpha;"> proxycfg -d</li> net stop wuauserv</li> net start wuauserv</li> <li>exit</li></ol> </li></ol>

Method 2: Corporate users or users who are behind a proxy server
If you use a proxy server to connect to the Internet, see the following Microsoft Knowledge Base (KB) article for information about how the Windows Update client detects and uses proxy servers:

900935 How the Windows Update client determines which proxy server to use to connect to the Windows Update Web site

<div class="moreinformation_section">

MORE INFORMATION
Besides using the methods that are described in the &quot;Resolution&quot; section, make sure that you have the latest Background Intelligent Transfer Service (BITS) update installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

842773 An update package that includes BITS 2.0 and WinHTTP 5.1 is available for Windows Server 2003, for Windows XP, and for Windows 2000

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.

Keywords: kbresolve kbacw kbhowto kbacwsurvey kbwindowsupdatev6 kbwindowsupdate kberrmsg kbprb KB836941

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