what system do you use? are you sure you launch proper executable for your system? have you tried restarting system? maybe you should try this: https://www.microsoft.com/pl-pl/download/details.aspx?id=48145
what system do you use? are you sure you launch proper executable for your system? have you tried restarting system? maybe you should try this: https://www.microsoft.com/pl-pl/download/details.aspx?id=48145