If you have already downloaded a file with a name like reachers011080pweb264hdhub4uzip and it is asking you to "install" an .exe or .bat file to view the video, Video files should play directly in a media player (like VLC or MPC-HC) and should never require an installation process to "unlock" the content.
If you’re looking to watch Reacher safely and in high quality, here is the best way to do it: The Safest Way to Watch
is an Amazon Original series. The only official way to stream it in 1080p or 4K is through Amazon Prime Video . Why choose official streaming over manual installs?