Windows 10 uses your bandwidth to send other people updates. Disable it here

[Dhalsim]

 

[kaufen]

I have a capped internet connection, good to know about this in time.

It is not right from microsoft to enable it by default without user permission, but I can confirm that this is a great feature for businesses without AD, during update time we suffered from every single PC downloading a lot of updates, hoping this can reduce that traffic.