You may receive an "Error 0x80072EE2," "Error 0x80072EE7," "Error 0x80072EFD," "Error 0x80072F76," or "Error 0x80072F78" error message when you try to use the Windows Update Web site or the Microsoft Update Web site (836941)

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 <http://download.microsoft.com/v6/windowsupdate/redir/wuredir.cab>. 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.

RESOLUTION

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.

Method 1: Home users or users who are not behind a proxy server

Step 1: Verify Internet connectivityMake 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 settingsIf 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: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 programsDisable 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 listAdd 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:
   • http://update.microsoft.com
   • http://download.windowsupdate.microsoft.com
   • http://update.microsoft.com/microsoftupdate/v6/default.aspx
6. Click OK two times.

Step 5: Remove entries for Windows Update and Microsoft Update from the hosts fileSome 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:

1. 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.
2. 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 "microsoft" and "update." 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
3. 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

4. On the File menu, click Save.
5. Exit Notepad.
6. 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:
   1. Click Start, click Run, type cmd, and then click OK.
   2. At the command prompt, type ipconfig /flushdns, and then press ENTER.

Step 6: Remove the proxy server entry from the WinHTTP proxy configurationIf 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:

1. Open Internet Explorer.
2. On the Tools menu, click Internet Options.
3. Click the Connections tab, and then click LAN Settings.
4. In the Local Area Network (LAN) Settings dialog box, click to select the Automatically detect settings check box, and then click OK.
5. Quit Internet Explorer.
6. Click Start, click Run, type cmd, and then click OK.
7. Type the following commands. Press ENTER after each command.
   1. proxycfg -d
   2. net stop wuauserv
   3. net start wuauserv
   4. exit

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: