Windows 10


Type Control Panel into the Search the Web and Windows field




Click on Control Panel Desktop App at the top of the list



In the top right corner of the Control Panel, select Category View from the View By: pull down menu


Click Programs


Under Default Programs, click the Make a file type always open in a specific program link


Under the Name column, locate and select JNLP from the list of Extensions


Click the Change program button


Click more apps


Scroll down to the bottom and select Look for another app on this PC link



Select the Java folder, (If you do not see Java, go back up one level to the c:/ drive and select Program Files(x86), then select the Java folder. If you do not have a Java folder here, you will want to go to www.java.com and download the latest version before continuing with these steps.)


Double click the latest jre folder (example: jre7, jre1.8_25, etc)


Double click the bin folder


Double click the javaws application


Click the Close button


JNLP files will now open, by default, with Java Web Start