Windows 10 will keep you safe and secure by applying updates automatically. Typically, users schedule “active hours,” so Windows 10 doesn’t install updates at inconvenient times. Will Windows 10 update if a PC is asleep? Technically, no.

Do computers still update in sleep mode?

They will not continue to download, but Windows will wake-up at the pre-determined update time to apply updates (usually 3am by default). This only works if the computer is asleep… if it is fully shut-down or in hibernate mode, it will not turn itself on.

Does Windows Update wake from sleep?

In Windows, Automatic Updates and/or Windows Update can automatically wake the PC up from sleep, hybrid sleep, hibernate or even shutdown state just to install updates and hotfixes.