When you set your internet connection as “metered,” Windows 10 won’t automatically download updates on it.
1. Go to Settings app > Network & Internet > Wi-Fi, and click the name of the Wi-Fi network you’re currently connected to.
2. Enable the “Set as metered connection” option on the properties page. This option only affects the Wi-Fi network you’re currently editing, but Windows will remember this setting for each individual Wi-Fi network on which you change it.
To change this option for a wired Ethernet network, open the Settings app, head to Network & Internet > Ethernet, and click the name of your Ethernet connection. Enable the “Set as metered connection” option on the properties page.
After enabling this option, Windows Update will say “Updates are available. We’ll download the updates as soon as you connect to Wi-Fi, or you can download the updates using your data connection (charges may apply.)” By marking a connection as metered, you’ve tricked Windows into thinking it’s a mobile data connection–for example, you might be tethering your PC to your smartphone. You can click the Download button to download and install updates at your leisure.