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 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