How to Set an Ethernet Connection as Metered in Windows 8 and 10
 

Windows 8 and 10 both allow you to set certain types of connections as metered so that you can limit the amount of data Windows (and certain apps) can use without asking. You can use the regular Settings interface to set mobile and Wi-Fi connections as metered, but for some reason Windows assumes you won’t need to do this with wired Ethernet connections. If you use an ISP that has monthly data caps, you know better. The good news is that a quick Registry edit will fix you right up.

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