MS Window Update

[Lynn]

I am running xp on my computer and when I try to check for
updates I get this:Thank you for your interest in Windows
Update

Windows Update is the online extension of Windows that
helps you get the most out of your computer.

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

I am running a MS OP System - XP

This was working and now I do not know why it doesn't?

Does anybody have a idea to fix this?

Thanks Lynn