Microsoft built a feature into Windows 10 called Delivery Optimization. Your computer may deliver and receive apps and patches to and from computers belonging to complete strangers. Your computer becomes a server to deliver patches and apps to people on the Internet. Though it is likely enabled on your computers, you can turn this feature off.
Microsoft presents the feature to users saying, “Download apps and OS updates from multiple sources to get them more quickly”.
Think about it and it sort of makes sense. Rather than every computer on the planet having to go to Microsoft’s servers to download patches and apps, Windows 10 computers can reach out to other Windows 10 computers and obtain the patch from them. This helps prevent Microsoft’s servers from becoming overloaded, and can allow your computer to receive patches and apps sooner. Ultimately, this can even reduce the amount of traffic flowing on the Internet in general.
Microsoft has built in strong security – though security can be broken.
Microsoft does their best not to use your computer to deliver patches if you are connected to the Internet using a mobile hotspot – helping you avoid unexpected data charges. You can also specify what Wi-Fi connections are charged as metered networks.
One concern is that, if your computer is being used to deliver updates, your Internet connection may slow down. Or, perhaps you don’t want your computer to be, what some users may feel is, a zombie for Microsoft to use as part of their patch delivery mechanism.
How to turn this feature off in Windows 10: Go to the Start button icon, choose Settings > Update & Security > Windows Update > Advanced Options. You can choose to not participate, or to select either PCs on your local network only, or PCs on your local network and PCs on the Internet”
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