You can try this registry edit and see if it fixes the problem for you. Open Regedit by going to Start, Run and typing in regedit and clicking ok.
Then navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
Select this dword value that says
"UseWUServer"=dword:00000001"
and change the value to 0 if you have this entry in your registry.
Reboot the computer and try to do your updates again.