I haven't tried it on Win 10, but it should work the same.
Here is a nice write up from How-To Geek explaining:
There aren't even options supposedly to schedule these updates meaning they will download and install when Microsoft wants them to. Basically home users get to be Beta testers for all the new...let's call them features Microsoft wants to release.
In light of this, what can Exede do to help mitigate the chronic eating of data that Windows 10 will cause since it will be updating automagically? Perhaps they can throttle Windows updates from Microsoft...no wait they cannot do that since Net Neutrality rules require ISP companies to provide equal bandwidth to all content providers.
Hopefully a hack for the RTM version of Windows 10 will allow this to be controlled from Home users, but I can foresee a LOT of ticked off users when they install Windows 10 and run out of data very quickly each month. Not to mention the way 10 is tied to cloud services. As much as I like 10, I may have to forgo installation of it at home due to these issues.
WW-WRT doesn't allow the use of wildcards in the list of sites blocked and the list at update sites such as at https://technet.microsoft.com/en-us/library/Bb693717.aspx is mostly wildcards so you have to use keyword blocking instead. http://*.windowsupdate.microsoft.com from the list would be keyword windowsupdate.microsoft.com but it seems to be working fine.
I also blocked any sites that auto update such as our virus scanner like this.
I haven't tried it on Win 10 but it should work the same.