macbook air java (yosemite 10.10.3) java help

Hi, I have a mid 2013 macbook air with Yosemite 10.10.3 using java 8.45. i am trying to log into my employers remote desktop site and the java applet that is supposed to pop up is not popping up. it gives an error. i have searched the net and tried things such as giving permissions to the employers website in the java console but nothing seems to work.