Re: so far it's taken an hour and it's still searching
If it hasn't been updated for a while, then there is a bug the update that means you can take days plus to update if certain patches aren't present - I thought they broken something it when I put in measures to stop Windows 10 arriving, but when it happened on a clean build I eventually found the issue - but that is why I am typing from Linux boot now and rarely start Windows at home
Fix is to use something like Autopatcher and disable Windows Update service (if you don't disable it then it interferers when trying to run patches manually or via another tool and you are back to days wait)