If you see this error when trying to run an applet in Firefox:
![Firefox Java Plugin Has Crashed](https://kbdeveloper.qoppa.com/wp-content/uploads/2016/02/ScreenHunter_02-Feb.-09-10.46.jpg)
most probably this issue is due to Firefox blocking the Java plugin because it is “outdated”.
To resolve this, try the following:
Update your Java Plugin to the latest version
Update Firefox to the latest version
Then restart Firefox and try again! It worked for me…