cancel
Showing results for 
Search instead for 
Did you mean: 

Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

SOLVED
Highlighted
New Contributor

Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

I just deleted old Java updates and installed new Java updates from legit Java site. Same problem persists. When testing java at the java test page, it says it's not there, "missing plug ins". I open Mozilla add-ons and get this: Java (TM) Platform SE 7 U9 10.9.2.5 disabled due to incompatibility/security reasons. Java does not give any other files to download. What am I supposed to do? I'm having problems with my website ATM because of Java & tons of missing java internet problems.

Please someone answer my question accurately and please solve my problem soon without asking me unrelated questions or questions to which I've already given the answer here (see below). Thank you.

1 ACCEPTED SOLUTION

Accepted Solutions
Site Moderator

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Only Java update 7 is currently blocked, Update 9 shouldn't be blocked. It is likely that Firefox hasn't updated the blocklist yet on your computer. Java update 9 is the most recent version of Java and the most secure (however I have no doubt in a few weeks they'll release yet another version)

10 REPLIES
New Contributor

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

I can't believe this thing deleted half my text while it asked me to verify! UGH!

I have: Vista Home Premium 32 bit

I have: Unistalled/reinstalled both Firefox 17.0 & Java Cleared cache/cookies Rebooted Done anything common sense dictates.

I need A simple solution that is worded simply and that works. Please & thanks!

Site Moderator

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Go to Java.com, and download the latest version of Java. Install it. Then start Firefox up, type about:addons into the address bar, press enter, and then go to Plugins and enable Java.

New Contributor

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Thank you Tylerdowner but as you see in my OP: Ive already stated having done all these things! I have 2 Java in add-ons which one are you talking about? Java Deployment Toolkit 7.0 is enabled and, per my OP, Java (TM) Platform SE 7 U9 10.9.2.5 disabled by FIREFOX due to incompatibility/security reasons.

I'm sorry, are you telling me to enable Java in spite of the security risk and incompatibility with FFOX 17?? Since I see you're a mod, why? Please explain as I'm concerned about the security risks & more important (since I have powerful security) about incompatibility issues. Thanks in advance for clarifying

Site Moderator

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Only Java update 7 is currently blocked, Update 9 shouldn't be blocked. It is likely that Firefox hasn't updated the blocklist yet on your computer. Java update 9 is the most recent version of Java and the most secure (however I have no doubt in a few weeks they'll release yet another version)

New Contributor

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Thank you for your reply. OK well I've just clicked enable on that "Java (TM) Platform SE 7 U9 10.9.2.5" Is there anything I need to watch out for so far as incompatibilities? Am I supposed to reboot once more or just restart firefox or neither?

Site Moderator

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

You should just be able to restart Firefox and be set after that.

New Contributor

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Thank you I will try it now then go check things with the test at Java and my website. OK I don't need to reboot, I tested at Java.com and it says "Congratulations! You have the recommended Java installed (Version 7 Update 9). " Woo-hoo! :-D Thanks so much!!! FINALLY! Happy! :-). However I'm still having the same problem at my website

Site Moderator

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

Do you really mean Java and not JavaScript?

To avoid confusion:

Make sure that you do not block JavaScript in case that is the problem.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.
New Contributor

Re: Java doesn't work on FFox 17 because Java plug add-on is disabled due to security problems claimed by FFox

I did what you advised and still FF window crashes (disappears). It runs for a while in Processes then quits altogether.

Win7 Ult. FF 17 Java 7 U9