This program is a huge improvement for compatibility on modern Windows systems and Widescreen support! Alt-tab is fixed!
Apply the patch numbered 1.04 (or 1.0.4 in the file versioning).
If you are not up to date to Windows 10, try some free. The link contains a large archive of files used to get JK2 up and running. It can be found on Steam or from the Mega download link. To get a good install of Jedi Knight Outcast running in 2017, you need to take these steps.
Star Wars Jedi Knight II – Jedi Outcast Files and Mods