Missing Codebase manifest attribute for:xxx.jar

Question

When I launch application from jnlp I receive message

\"Missing Codebase manifest attribute for:xxx.jar\"

what does it means?<

Answer 1

Here's what I've found:

CAUSE

Starting with Java 7 Update 51, Java has enhanced security model to make user system less vulnerable to the external exploits. The new version of Java does not allow users to run the applications that are not signed (Unsigned), Self signed (not signed by trusted authority) and the applications that are missing permission attributes.

I got the problem in TopCoder Arena launch. It can be easily removed using the below link:

http://www.java.com/en/download/help/java_blocked.xml