Since early morning, two different laptop computers with Windows Vista, no progress with Windows Update.
One machine showed several updates available, but after an hour and a half only showed still "Downloading" and "0% Complete". I became tired of this and closed Windows Update.
I KNOW updates must be available and ready, so am running Windows Update on the other machine, and chose "Check for Updates". After half an hour, Windows Update is still checking for updates.
Other kinds of software updates are working well on both machines. My guess, something is wrong at the other end, not at mine. Google updates, Norton updates, printer driver updates, no problem. Not so good for Windows Updates.
I do not myself have a Microsoft Account, otherwise I might try asking on MS Forums.