By understanding why your application is being blocked and taking the necessary steps to address the issue, you can ensure a secure and smooth Java experience.

Click the Security tab at the top of the window.

Permits Java applications that are signed with a valid certificate.

This report is structured for IT administrators, help desk staff, and end-users who encounter this security warning when trying to run Java applets or Web Start applications.

The Java security policy is designed to protect users from running untrusted or malicious code. When a Java application or applet tries to run, the JRE checks its authenticity and permissions. If the application doesn't meet the security requirements or if it's trying to access sensitive areas of your system without permission, the JRE will block it.

Here are the steps to fix it, starting with the easiest solution.

Modern browsers have largely stopped supporting Java applets entirely due to security risks.