If there is a 'Exception Site List' section in this window, click on the 'Edit Site List.' button -> Click the 'Add' button -> Type in the web server location for the Java applet like '' -> Click the 'OK' button -> Click the 'OK' button.

In the 'Java Control Panel' window that appears -> Click the 'Security' tab.

Click on the Windows 'Start' menu in the lower-left corner of the screen -> 'Control Panel' -> 'Programs' -> 'Java'.

If you are unable to install/upgrade to the latest Java version, and you trust the unsigned Java applet to be safe, you can workaround this problem by adding an 'exception site' or temporarily lowering the security level of the currently installed Java:

If you are allowed to install/upgrade software on your computer, please install the latest Java upgrade first, relaunch the web browser, and try again. Your security settings have blocked an untrusted application from running.įor security reasons, recent versions of Java may block unsigned Java applets from automatically running by default. Your security settings have blocked an application from running with an out-of-date or expired version of Java. How to Fix Java Applet Security Errors How to Fix Java Applet Security Errors Security Errors When Loading Java Appletsĭid you get errors like the following when you tried to run a Java applet in the web browser?

Applet viewer mac os x