Question

I installed the BIRT Viewer in Apache Tomcat 7, but I have this error when running a report on the application:

java.lang.IllegalStateException: The viewing session is not available or has expired

I have made same steps in another PC and everything went well.

I read many posts that talk about it, but neither of the solutions have resolved the problem.
The main one was this.

Answer 1

Though application worked fine in Firefox and Chrome, I have experienced same error in IE browser only when report is opened within iframe and only when frameset is used.

There are two ways to fix this:

1. Reduce security in IE to low or add the site to trusted.

2. Before opening report in iframe, call Ajax function to some test report.

   For ex:

   ajaxRequest.open("GET","http://localhost:8080/birt/frameset?__report=test.rptdesign");
   

I have to opt for second option, because in my situation I cannot ask my users to reduce security or trust our site.