Page 820 - Windows 10 May 2019 Update The Missing Manual: The Book That Should Have Been in the Box

All of this is really kind of a cool idea. But if your internet service

has a monthly limit, you might worry that your computer sending
out those bits of updates to other people online might eat up data
unnecessarily.

Fortunately, this feature doesn’t kick in at all if you’re using a

cellular connection. If you’re on a Wi-Fi network with monthly
data limits, though, you should inform Windows so it doesn’t eat
up your allotment by sending bits of update to strangers online.

You can turn the whole thing off, using the master switch on this
Settings page. Or leave it on and choose “PCs on my local

network.” That way, you get the benefit of bandwidth and data
savings (by sharing update bits among your own computers),
without worrying about becoming part of the larger internet data-
sharing network and running up your data bill.

Uninstalling a Major Windows Version

The discussion so far has concerned the relatively minor updates and

patches that come along weekly or monthly. But there are also the
whoppers, the twice-a-year Windows 10 updates that are so important, they
get their own names, like “Fall Creators Update” or “May 2019 Update.”

What happens if you install one of those, and it turns out to be a disaster? If
you realize your mistake within about 10 days, no big deal. Open →
→ Update & Security → Recovery, and choose “Go back to the previous

version of Windows 10.”

(After 10 days, Windows deletes the files from your previous version; you
can’t roll back without doing a complete reinstallation.)

Note

Rolling back like this is especially handy if you’ve signed up for the Windows Insider Program
(“Activation”), and you’ve just received a new build that’s too buggy to work with.