Windows Do Download [verified]s Continue In Sleep Mode -

Here’s a short, informative piece answering whether Windows continues downloads in sleep mode:

To ensure downloads finish, disable sleep manually until they're complete. Don't rely on Windows to keep downloading in standard sleep mode.

The short answer is —by default, Windows pauses all network activity and downloads when the PC enters Sleep mode . Sleep is designed to save power by stopping most system operations, including your Wi-Fi or Ethernet connection.