Latest Java Update Blocking Certain Web Sites

We were getting this error after we updated to the latest Java version (51)…

“Your security settings have blocked an untrusted application from running.”

Before this the site was suggesting we upgrade to the latest version.

So it is blocking a particular site from running the Java applet. Take note of the full site name under Location.

Next go in to Control Panel and access the Java Control Panel

Under the Security tab is the Edit Site List, click that button.

Type in the site you saw on the pop up error under location.

Hit OK and launch the Java applet again.

You should get an error like this.

Hit run if you feel safe to run.

This new feature is an interesting addition to the latest version of Java, most likely in an effort to squash many exploitations and prevent nasties. But this will likely affect a lot of internal applications and sites as well for businesses.