A little known feature of Windows 10 is peer updates. This technology allows Windows 10 computers to share updates among themselves rather than relying solely on the Windows Update Servers. There are two main advantages in doing this. By allowing just one computer in your network to download any given update from Microsoft and distribute it to other Windows 10 computers you not only save internet bandwidth but also speed up the update process.
While this all sounds wonderful in theory in practice there is one major flaw. By default, peer updates over the internet is turned on. That's right, most Windows 10 computers when turned on are sitting in your home and in your workplace UPLOADING their update data to computers all over the internet. Your bandwidth is being used to reduce the load on Microsoft's update servers while at the same time, slowing down your internet connection and possibly costing you money if you are going over your internet service data cap and paying per GB.
How Microsoft could ever have thought it was a good idea to have this feature at all let alone turned on by default is beyond comprehension.
It goes without saying that our advice is to turn off Internet peer updates immediately and it's not that hard to do, just follow these simple steps.
Open Settings by clicking the Start button and selecting Settings at the bottom-left corner.
Click (or tap) Update & security
Click the Advanced options link
Click Choose how updates are delivered - you may have to scroll down
Select PCs on my local network. This will allow your computers to share updates on your own network but not over the internet.
That's it, you're done.