Mike,

As noted, ESR 52 and JRE 7 seem to work with all of the web applications that 
call any of our Java based applets, although the one I’m most concerned about 
is a digital signature applet.  To be honest, I’m not even sure if there are 
other applets, but there are multiple applications that use the same signing 
applet.

I have verified that for JRE 8u171, both npjp2.dll (JRE) and npdeployJava1.dll 
(Java Deployment Toolkit) both show up in about:plugins as enabled.

Marc

From: Mike Kaply [mailto:[email protected]]
Sent: Monday, August 20, 2018 5:45 PM
To: MELTZER, MARC S. (ITID) (FBI) <[email protected]>
Cc: [email protected]
Subject: Re: [Mozilla Enterprise] Firefox and Java

That's really odd. Do other applets work with Java 7 and Firefox 52?

Do you see the right things when you go to about:plugins?

Mike

On Wed, Aug 8, 2018 at 8:50 AM, MELTZER, MARC S. (ITID) (FBI) 
<[email protected]<mailto:[email protected]>> wrote:
We have a web application that calls a Java applet that seems to be very 
particular under which conditions it runs.

When we use Firefox ESR 38.x and Java 7, everything runs fine.
Firefox ESR 38.x and Java 8, everything runs fine.
Firefox ESR 52.x and Java 7, everything runs fine.

So far, you'll see if we mix old and new versions, things run smoothly.

When we run Firefox ESR 52.x and Java 8, however, the Java applet cannot be 
called.

Does anyone have any ideas why this might be?  The configurations of the 
different versions are the same in each case, so I don't think it's a settings 
issue.  Is there perhaps some protocol or some other setting that has been 
deprecated in either product that somehow is preventing the applet from 
running?  Any ideas how to troubleshoot?

Thanks,
Marc
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