Everytime I double click an application icon on my desktop, it does something else rather than opening the application. I was messing around the folder options, and I went to tools --> file types --> extensions -> Edit file type --> Actions

Now for all my file folders, the action "find" replaced what should be "explore" (I think)

So, my question is, how do I change it back to default?

(I tried creating a new action but it wont let me remove or change the old action)