22. Get Windows Updates from other sources
Windows 10 introduces an option that lets you download updates using peer-to-peer technology, rather than Microsoft directly. Download the new patch once from Microsoft, then share it among the PCs under your care.
To tinker with the setting, head to Settings > Update & Recovery > Windows Update > Advanced Options > Choose how you download updates. By default, ‘Get updates from more than one place’ is enabled and configured to grab updates from PCs on both your local network and the Internet at large. If you don’t like the idea of your PC using your bandwidth to share Windows Updates with strangers, disable it.