Even the system environment variables are filtered. The Web Start application sandbox is a close cousin to the original applet sandboxes, with a few modifications found in Java 1.2 SecurityManager.

If you need to re-enable Apple's Java Web Start feature for your uses, then you can also do this by creating a link to the web start program that is embedded in the JavaVM framework.

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.