Hello, and welcome to the Seven Forums!
These network related errors are a massive pain. I much prefer to have one of the corruptions, because at least those are hard and solid solutions. Run the batch file at the bottom of this post: Network Posting Tips - Vista Forums
It applies to 7 as well as Vista.
Have a look here: Windows Update Error code 0x8024402c « TechSquad
Just in case this is caused by a corruption rather than a network error, as codes are never exact, run this tool: Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, for Windows 7, and for Windows Server 2008 R2
When it has finished installing the update, it is done!
Then naviagate to C:\Windows\Logs\CBS\ and open CheckSUR.log. Copy and paste the entire log into a new reply, prerferably in code tag if you can find them, but otherwise don't worry!
Thanks, and good luck!