Important new item in Windows 10 you need to know about, hello security.

Believe it or not Microsoft has added a Bit-Torrent style peer to peer update process. While this could be good for some companies since an update only has to download to one computer by default you are also sharing these files with the windows world! This will certainly be a high security concern.
By default, Windows 10 enables peer-to-peer downloads over the Internet. Your PC will your upload bandwidth sending those Windows updates to other PCs. You can disable this by selecting only “PCs on my local network” See graphic.

If you run Disk Cleanup and clean up the Windows Update files lying around on your PC to free up space, your PC won’t be able to provide peer-to-peer downloads because the files won’t be there.

 

Windows 10 peer to peer