It looks like designating a connection as metered in the Windows 10 Creators Update may not block all updates from being downloaded on your system
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Setting a connection as metered in Windows 10 has been a widely used and shared method to control the automatic download and installation of Windows Updates which of course are mandatory on the Windows 10 Home SKU of the operating system so this will impact that work around. In addition, users who are on true metered connections might not be expecting these required updates to use up their bandwidth either after they get the Creators Update when it is released.

So when I saw this new description of how updates would be treated on a metered connection it got me wondering what exactly are those updates which are required to keep Windows running smoothly.

I have reached out to Microsoft to get some clarity on the types of updates that would fit into that category and once I hear back from them I will update this article.

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Update: I heard back from Microsoft and was provided this from a spokesperson:

“We don’t plan to send large updates over metered connections, but could use this for critical fixes if needed in the future.”

Not a lot of clarity about bandwidth that might get used so this is an area we will have to keep an eye on.

Source: Metered Connections in Windows 10 Creators Update Will Not Block All Windows Update Downloads (Updated)