I’m having a problem accessing Windows Update (Error number: 0x8024402C). One of the solutions it tells me is this:
A misconfigured Proxy/Firewall can cause this problem. Double-check the Proxy/Firewall settings. Add the following urls to the exception list within your Firewall/Proxy:
http://.update.microsoft.com
https://.update.microsoft.com http://download.windowsupdate.com