If you own the game legally, the launcher (the .exe file that starts the game) is automatically installed by the platform you purchased it from. You should never need to download a standalone "launcher exe" from a website.
The launcher depends on system libraries. Download the latest: far cry 5 launcher exe download
Sometimes the problem isn’t FarCry5.exe itself, but Ubisoft Connect failing to call it correctly. If you own the game legally, the launcher (the