I have version 16 on my laptop and 17 on my desktop (Win10 Pro) I am able to use both very easily and have had no trouble on either. I installed this and use a vpn to enable to view out of area sporting events over the past several years. I have appreciated SOS for a long time and will continue to do so. Remember, you do not have to download the free software; it is your decision to do so. Also for those who claim you can’t uninstall something…try revo free uninstaller. I discovered Software Organizer here and then purchased same. It traces any installation and removes same when necessary. Thank you Ashraf!