Application Blocked by Security Settings
Applies to:
Java SE JDK and JRE - Version 7 and later
Information in this document applies to any platform.
Goal
Why do I get a popup that says, "Application Blocked by Security Settings... Your security settings have blocked an application from running with an insecure or expired jre," on Java SE 7 update 21?
Solution
There are three recent changes involved that would change this behavior.
First, beginning with Java SE 7 update 10 (Java 7u10), if you are running on any Java 7 update other than the latest update, or if your JRE is past its built-in expiration date, your Java version is considered insecure. For example, when 7u25 released, the 7u21 and older updates are now considered insecure. Please see the Java 7u10 Release Notes and the Setting the Security Level of the Java Client documentation for more information.
Second, there are stricter rules in 7u21 regarding code signing. See the Code Signing documentation for more information.
Third, the default Java Control Panel Security setting changed from 'Medium' to 'High' in 7u21. These security settings will change how your application behaves depending on whether the application is signed by a Certificate Authority (CA), self-signed, or unsigned, and also depending on whether you're attempting to run the applet on a secure JRE or an insecure/expired JRE. See Java Control Panel - Security documentation for a description of all the behavior scenarios per security setting.
There are three ways to avoid the applet from being blocked:
1) Sign your applet with a certificate from a Certificate Authority (CA) - the applet will run with a single verification prompt to the user.
2) Update to 7u25 or greater - unsigned sandbox applets will run but emit a multi-click prompt for the user to verify and accept the risks of running an unsigned applet.
3) Lower the security slider to Medium - the unsigned sandbox applet will run but emit a multi-click prompt for the user to verify and accept the risks of running the unsigned applet.
References
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/jcp.html#security
http://www.oracle.com/technetwork/java/javase/tech/java-code-signing-1915323.html
NOTE:1531711.1 - "Your Java Applet Is Insecure" - Java SE Applet Security Warning Dialogs
NOTE:1553875.1 - Handling the New JRE Security Dialogs
NOTE:1549611.1 - New Java SE 7u21 Security Features May Emit Security Warning Dialogs
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/client-security.html
http://www.oracle.com/technetwork/java/javase/7u-relnotes-515228.html
Applies to:
Java SE JDK and JRE - Version 7 and later
Information in this document applies to any platform.
Goal
Why do I get a popup that says, "Application Blocked by Security Settings... Your security settings have blocked an application from running with an insecure or expired jre," on Java SE 7 update 21?
Solution
There are three recent changes involved that would change this behavior.
First, beginning with Java SE 7 update 10 (Java 7u10), if you are running on any Java 7 update other than the latest update, or if your JRE is past its built-in expiration date, your Java version is considered insecure. For example, when 7u25 released, the 7u21 and older updates are now considered insecure. Please see the Java 7u10 Release Notes and the Setting the Security Level of the Java Client documentation for more information.
Second, there are stricter rules in 7u21 regarding code signing. See the Code Signing documentation for more information.
Third, the default Java Control Panel Security setting changed from 'Medium' to 'High' in 7u21. These security settings will change how your application behaves depending on whether the application is signed by a Certificate Authority (CA), self-signed, or unsigned, and also depending on whether you're attempting to run the applet on a secure JRE or an insecure/expired JRE. See Java Control Panel - Security documentation for a description of all the behavior scenarios per security setting.
There are three ways to avoid the applet from being blocked:
1) Sign your applet with a certificate from a Certificate Authority (CA) - the applet will run with a single verification prompt to the user.
2) Update to 7u25 or greater - unsigned sandbox applets will run but emit a multi-click prompt for the user to verify and accept the risks of running an unsigned applet.
3) Lower the security slider to Medium - the unsigned sandbox applet will run but emit a multi-click prompt for the user to verify and accept the risks of running the unsigned applet.
References
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/jcp.html#security
http://www.oracle.com/technetwork/java/javase/tech/java-code-signing-1915323.html
NOTE:1531711.1 - "Your Java Applet Is Insecure" - Java SE Applet Security Warning Dialogs
NOTE:1553875.1 - Handling the New JRE Security Dialogs
NOTE:1549611.1 - New Java SE 7u21 Security Features May Emit Security Warning Dialogs
http://docs.oracle.com/javase/7/docs/technotes/guides/jweb/client-security.html
http://www.oracle.com/technetwork/java/javase/7u-relnotes-515228.html
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