[dm2]

I think that they have a list of approved ISPs or some dependable way to make sure it doesn't happen on metered connections.

http://windows.microsoft.com/en-us/windows-10/windows-update...

"As with Windows 8.1, Windows 10 won't automatically download updates or apps if it detects that your PC is using a metered connection. Similarly, Delivery Optimization won’t automatically download or send parts of updates or apps to other PCs on the Internet if it detects that you're using a metered connection."

[unsignedint]

Don't you actually have to specify that your connection is metered in order to that to work?

I think it's for tagging things like wireless hotspot, etc.

[dm2]

I'm not sure exactly how it works but there is documentation on what they're calling "Connection Cost".

https://msdn.microsoft.com/en-us/library/windows/apps/xaml/w...

https://msdn.microsoft.com/en-us/library/windows/apps/xaml/m...

https://msdn.microsoft.com/en-us/library/windows/apps/hh7503...

[Sami_Lehtinen]

What it does matter if it's metered or not? I've got metered connection, it's 10TB / month included + 1€/TB for excess (outbound). I don't usually worry about little extra traffic.