I download cdf player from page http://www.wolfram.com/cdf-player/ , choose ver 11.3, and windows, than start download manager,
and after downloading I press Launch, and have an error, Windows 7 Ultmate 64 bit.
I had other problems with Windows 10. First the CDF Player exe file was deleted by Norton.
Then my computer did not recognize the exe file. What do I need to run the file.