On a limited hotspot or site connection, every gigabyte counts - but switching updates off completely is the wrong rescue. Metered mode is the middle path, if you know what it actually filters.
Tether a laptop to a phone at a client site, or run an office on a capped connection, and Windows Update suddenly becomes a data problem. The instinct is to kill updates entirely - the worst option. Windows has a designed answer, the metered connection flag, but it is widely misunderstood: it does not stop updates, it filters them. This page shows what passes the filter, what waits, and the one Advanced options toggle that rewrites the rule.
An example metered Wi-Fi setup and what Windows Update honestly does on it. The exact mix can vary by build.
Ethernet connections can be marked the same way from their own properties page. The setting belongs to the network, not the PC - your home broadband stays unmetered while the phone hotspot you tether at a site office is metered, which is exactly the distinction you want.
Here is the honest part most guides skip: metered does not mean blocked. On a metered connection, Windows Update holds back most downloads but still delivers updates it classifies as priority - in practice, the security fixes Microsoft judges too important to wait. Feature updates, optional updates and driver updates wait until you are on an unmetered connection or press the download button yourself. That behaviour is deliberate and, frankly, correct: the alternative - a laptop on a limited hotspot plan skipping a critical security fix for a month - is worse than a small download.
In Settings then Windows Update then Advanced options, the switch Download updates over metered connections is off by default. Leave it off and the priority-only behaviour above stands. Turn it on and you are telling Windows to treat metered data as free - every update downloads as normal. There is one good reason to flip it temporarily: you are stuck on a metered connection for weeks and a specific update matters more than the data. Flip it, take the update, flip it back.
Be realistic about your data budget. A monthly cumulative update is usually a few hundred megabytes; a feature update is several gigabytes, and the metered rules already hold those back for you. If your hotspot plan is measured in gigabytes per day, metered mode plus priority-only downloads fits comfortably inside it. If your plan is a few hundred megabytes total, no Windows setting can make modern updates fit - plan a weekly stop at an unmetered connection instead, and let the PC catch up there. The setting is a filter, not a miracle.
Watch metered mode being set and tested against a real update in the full video.
Watch Full VideoYes, that is one of the things it reliably does. Feature updates and optional updates wait while the connection is metered; they download when you join an unmetered network or when you manually start them. What does not wait is the set of priority security updates Microsoft pushes through anyway.
Almost certainly not. Priority updates, app updates from the Store if they are allowed, cloud sync and your own browsing all still use data. Metered mode reduces Windows Update to its priority lane; it does not put the whole PC on a data diet. Check the data usage page in Settings to see which app actually spent the data.
No. You would gain nothing but odd side effects - some apps and sync tools also respect the flag and behave as if data were scarce. For timing control at home, active hours, restart notifications and pause are the right tools. Save metered for connections that genuinely cost per gigabyte.