"You must be running a Microsoft Windows operating system"

[Crystal Clear]

When I try to run the Windows Update it gives me this message:

You must be running a Microsoft Windows operating system in order to
use Windows Update.

Any help would be appreciated.

 

[Colon Terminus]

Go here:
http://v4.windowsupdate.microsoft.com/troubleshoot/
Click "Problem reaching Windows Update"
Scroll down the list
You'll see your problem described exactly.