Java not working in Chrome

Web Browser ›› Error Messages and Warnings ››

problem

My lessons have been functional for quite some time, but today all of the sudden users are getting this message within Chrome across the top of the Loading Please Wait screen, and the lesson refuses to load.


  This site uses a plugin (Java(TM)) that is unsupported.

 


DETAILS

The ability for Java to work within a web browser is provided by the Oracle Java plug-in. This plug-in relies on the cross platform plugin architecture NPAPI, and as of April 2015 with the release of version 42 of Chrome, the Chrome web browser no longer supports plug-ins which utilize NPAPI.


Please see:


This means that until Oracle rewrites the Java plug-in to utilize newer technologies such as PPAPI, Chrome 42 and higher will not support Java. Because of this, if your ToolBook lessons are configured to use Java, your end users will encounter this problem if they are using version 42 (or higher) of Chrome.


View more useful information about using Chrome with ToolBook content:


Workarounds

There are several ways to work around this problem, and each is outlined below.

HAVE YOUR USERS MANUALLY ENABLE NPAPI SUPPORT

Apparently Chrome will continue support (until at least September 2015) a way to allow individual Chrome browser users to enable NPAPI plug-in support. The instructions for doing so are here: https://java.com/en/download/faq/chrome.xml#npapichrome

USE A DIFFERENT WEB BROWSER

Other web browsers, such as Internet Explorer, Firefox and Safari, still are offering support of this NPAPI plug-in. You may want to recommend that your users use one of those web browsers instead.

USE AN OLDER VERSION OF CHROME

Since versions of Chrome older than version 42 still fully support the NPAPI plug-ins, one option is to install an older version of Chrome. This is problematic however since Chrome tends to auto-update itself.

DISABLE JAVA IN YOUR LESSONS

Actually, by default, Java is not used within ToolBook DHTML lessons. Java will only be utilized by a ToolBook lesson if you turned on a feature in ToolBook which demands Java be used. So, it is possible that Java is not even needed for your ToolBook lesson to function, and if that's true, you can turn off the need for Java and then Publish your lesson to DHTML again.


Turning on any of the following features will essentially turn ON Java. By turning all of these OFF, you'll essentially be turning OFF the need for Java for this lesson.




KEYWORDS: java chrome yellow bar warning loading please wait




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