Windows updating hack
You can still download updates on a metered connection, you'll just have to do it manually by going to Settings Download.
While you can't really stop Windows 10 from automatically updating the OS, you can stop it from automatically updating your device drivers.
And, while the the recent Wanna Cry ransomware does not (thus far) appear to affect Windows 10, you need to make sure your PC is kept up-to-date with security patches to avoid exactly those sort of attacks.
If your main issue with Windows 10's automatic updates is the fact that your PC restarts at inopportune times, you're in luck: Windows 10 allows you to schedule restarts for a specific time.Windows 10 automatically checks for, downloads and installs new updates to your PC -- whether you like it or not.This new feature is actually pretty convenient for most users, but not everyone wants their operating system updated on Microsoft's schedule.Thanks in advance." About so that you can find the most appropriate solution. Scroll down to Windows Update, and double-click it. The group policy editor will notify you of new updates without automatically installing them.Besides, the fourth way of trying to control the Windows 10 update by using Registry is somewhat risky, do remember to back up your data and the details will be shown in the extra tips section. Note: If you need to update your Windows version later, you can repeat the steps above, then select Enabled to turn on this feature, so that you can continue to download the updates. Extra Tips: Editing the registry is risky, and it can cause irreversible damage to your installation if you don't do it correctly.