Windows 10 - choose how updates are delivered

settings - update & security - windows update - advanced  options - choose how updates are delivered

when this is turned on, your PC may also send parts of previously downloaded windows updates and apps to PCs on your local network, or PCs on the internet, depending on what's selected below





HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode: 0x00000000



PCs on my local network, an PCs on the Internet

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode: 0x00000003