Error code 0x8024402C when you try to install updates on Windows Update or Microsoft Update Web sites

To resolve this issue, use the following methods in the order in which they are presented. If method 1 does not resolve this issue, go to method 2.

Method 1: Remove characters from the proxy exception list, and then clear the proxy cache

To do this, follow these steps, as appropriate for the operating system that you are running.

Windows 2000, Windows XP, and Windows Server 2003

1. Open Internet Explorer.
2. On the Tools menu, click Internet Options.
   
   Note If the menu is not available in the Internet Explorer window, press the ALT key on the keyboard to display the menu.
3. Click the Connections tab, click LAN Settings, and then click Advanced.
4. Delete any entries in the Exceptions section, and then click OK.
5. Close Internet Explorer.
6. Click Start, click Run, type cmd, and then click OK.
7. Type the following commands. Press ENTER after each command.
   
   • proxycfg -d
     
   • net stop wuauserv
   • net start wuauserv
     
     
     
8. Try to install the updates again.

Windows Vista and Windows Server 2008

1. Open Internet Explorer.
2. On the Tools menu, click Internet Options.
   
   Note If the menu is not available in the Internet Explorer window, press the ALT key on the keyboard to display the menu.
3. On the Connections tab, click LAN Settings, and then click Advanced.
4. Delete any entries in the Exceptions section, and then click OK.
5. Close Internet Explorer.
6. Click Start, and then type cmd in the Start Search box.
7. In the search results list, right-click Cmd.exe, and then click Run as Administrator.
   
   If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.
8. Type the following commands. Press ENTER after each command.
   • netsh winhttp reset proxy
   • net stop wuauserv
   • net start wuauserv
9. Try to install the updates again.

Method 2: Enable the "Automatically detect settings" option in Internet Explorer

To do this, follow these steps:

1. Open Internet Explorer.
2. On the Tools menu, click Internet Options.
   
   Note If the Tools menu is unavailable in Internet Explorer, press the ALT key to display the menu.
3. On the Connections tab, click LAN Settings.
4. Click to select the Automatically detect settings check box, and then click OK.
5. Try to install updates again.