Since JNLP files are simply Java Web Start files that open applications through an Internet browser, any browser that works in Windows 8.1 will open a JNLP file as long as you have Java installed.

To fix the JNLP file not opening problem, update or install Java Runtime Environment, set JRE as the default app, or install JRE 64-bit.

NextGen Connect, now Open Integration Engine, has always needed to be managed from a .jnlp file which is accessed via some launcher. As the community shifts from Connect to Open Integration Engine it ...