Hi, I have already successfully upgraded mine into Windows 8.1 Pro with WMC from the Store. It took me about 4 days to download Windows 8.1 Pro with WMC from the Store. Now, the problem is my friends are suffering from a very slow connection because of some network capping in our area that made their download seems so very very slow and next to impossible. What I have in mind is what if I can just share the downloaded files from my computer and transfer it to their devices in order for them to continue the upgrade without needing to download individually such a huge file size from the store. The problem is I don't know where to locate such files for the Windows 8.1 Pro with WMC upgrade downloaded from the store or is it even possible? And also if ever there's such a solution for this my computer was upgraded from Windows 8 Pro with WMC to Window 8.1 Pro with WMC while one of my friends only has Windows 8 Pro. Will those files from my computer with WMC work to upgrade my friend's Windows 8 Pro to Windows 8.1 Pro without WMC?