Yes. I understand... Manage is a UAC control and so is "run as administrator" all these things you are trying to do and it not working is in indication that the system is locked down and you are not on an administrator profile.
Any action with a shield next to it, means it requires admin rights to run. You can see a shield on Manage option... This is what I'm saying. You are not an administrator of your system.
If you were, you should be able to disable UAC, as described here.
http://winaero.com/blog/how-to-turn-off-and-disable-uac-in-windows-10/
(do option one only)
FMovies YesMovies SolarMovie
Some times UAC causes these kinds of issues. So again, disable it and reboot your PC and try again.