Ok, i finally upgraded my OS from latest 8.1 version of Windows Pro to the latest March build of Windows 10 Pro. It’s light, quick upgrade process, hence it takes about 3,05 GB of file to download.
The new layout and feature, seem more simplified, the new media and photo viewer, live task view and the unique #Cortana the personal assistant from #Microsoft. So far no problem, except my old Cisco VPN application that worked on Windows 8.1 does not comply with Windows 10 architecture, which i think need to ask #Ksei to release their updated Cisco AnyConnect soon for Windows 10 user.