Hi have been prompted to update Comulative update for Windows 10 version 1607 for x64 based systems(KB4015438). This has happened twice in both instances I have aborted. It started on 25% and above 2 hours later not a thing had happened. Do I need this update and if so is there another way to obtain it and how long should it take to download the way things were going I think it would have taken days. my computer knowledge is rather limited Many thanks. p.s it is a Lenovo laptop