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Java 7 update 13 not recognized by Firefox 18.0.2

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New Contributor

Java 7 update 13 not recognized by Firefox 18.0.2

I recently updated my java to version 7 update 13 and FF 18.0.2. Somewhere in between, Firefox no loner recognizes Java. I've tried removing Java completely and then reinstalling Java 7u13, but Firefox never recognizes it. It does NOT appear in the plugins. In the Java settings through the Java Control Panel, I've noticed that the "Mozilla Family" is unchecked. Even after checking the box, it gets unchecked when I go back and look at it.

Is there a known compatibility issue with Java 7u13 and and FF 18? Is there a way to *force* FF to recognize Java in the plugsin selection? Is FF blocking Java from getting installed? Is there a way to prevent FF from blocking any addons?

1 ACCEPTED SOLUTION

Accepted Solutions
New Contributor

Re: Java 7 update 13 not recognized by Firefox 18.0.2

I think I found the problem. I had a Borland Java plugin also installed. Once I removed it, and then re-installed Java 7u13, FF detected it. However, now FF crashes with when I try to load Java. =|

EDIT: Fixed the crash. During all my troubleshooting, I had set dom.ipc.plugins.java.enabled = true. Once i returned this to false, it worked. I'm good now.

7 REPLIES
Site Moderator

Re: Java 7 update 13 not recognized by Firefox 18.0.2

Do you have JavaFX installed in the windows control panel? try to remove it

New Contributor

Re: Java 7 update 13 not recognized by Firefox 18.0.2

I do not have JavaFX installed.

Site Moderator

Re: Java 7 update 13 not recognized by Firefox 18.0.2

hello, in some instances firefox may not be able to detect that the java plugin is installed, because oracle made an error in registering the java plugin for mozilla-based browsers... this will apparently just be fixed with its next release.

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8005410

for different workarounds & troubleshooting steps in the meantime see http://kb.mozillazine.org/Java#Windows_installation_issues

Site Moderator

Re: Java 7 update 13 not recognized by Firefox 18.0.2

Make sure that you have the 32 bit Java version for 32 bit Firefox installed.

You can find the latest Java version on the Oracle website.

See Java Platform > Java SE 7U13 (Download JRE)

New Contributor

Re: Java 7 update 13 not recognized by Firefox 18.0.2

I think I found the problem. I had a Borland Java plugin also installed. Once I removed it, and then re-installed Java 7u13, FF detected it. However, now FF crashes with when I try to load Java. =|

EDIT: Fixed the crash. During all my troubleshooting, I had set dom.ipc.plugins.java.enabled = true. Once i returned this to false, it worked. I'm good now.

New Contributor

Re: Java 7 update 13 not recognized by Firefox 18.0.2

Fixed the crash. During all my troubleshooting, I had set dom.ipc.plugins.java.enabled = true. Once i returned this to false, it worked. I'm good now.

Regular Contributor

Re: Java 7 update 13 not recognized by Firefox 18.0.2

I have found that the easiest way to update the never-ending Java saga is to (on Windows) go into the control panel, click the Java Icon and Update from there.

Hope this helps!

Regards, Axis