This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

Jre plugin reported missing

  • 6 respostas
  • 7 have this problem
  • 1 view
  • Last reply by cor-el

Burgomatic
Burgomatic
more options

Firefox reports that "JRE Plugin is missing", and gives an option to install. When I press "install" I get that "plugin was not installed", and an option for manual install, which only takes me to a Java support page that sends me into an eternal loop of other support pages.

Java installer/verifier reports that Java 8 is installed correctly. Java works on Internet Explorer on the same PC, as I can log in to the same pages that asks for the Plugin. Java is enabled for browsers in all settings.

Any ideas?

Firefox reports that "JRE Plugin is missing", and gives an option to install. When I press "install" I get that "plugin was not installed", and an option for manual install, which only takes me to a Java support page that sends me into an eternal loop of other support pages. Java installer/verifier reports that Java 8 is installed correctly. Java works on Internet Explorer on the same PC, as I can log in to the same pages that asks for the Plugin. Java is enabled for browsers in all settings. Any ideas?

Chosen solution

I found the problem. Firefox is not compatible with Java 8. At least not with the websites I use. I re-installed Java 7.x, and it all worked again.

Ler a resposta no contexto 👍 0

All Replies (6)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

Could you check your plugin setting on Firefox's Add-ons page. Either:

  • Ctrl+Shift+a
  • "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Plugins. Look for "Java(TM) Platform SE 8 U25". If you find that, check that it is set either to "Ask to Activate" or "Always Activate" and not to "Never Activate".

Note that Firefox is a 32-bit application. If you only installed the 64-bit version of Java, you probably also need to install the 32-bit version in order to get the plugin compatible with Firefox. See the note on this page: http://java.com/en/download/manual.jsp

Burgomatic
Burgomatic Question owner
more options

Chosen Solution

I found the problem. Firefox is not compatible with Java 8. At least not with the websites I use. I re-installed Java 7.x, and it all worked again.

Burgomatic modificouno o

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

That's strange, I just installed Java 8 before replying to your post and it tested out fine on http://www.java.com/en/download/installed.jsp . But maybe some sites are testing for it in a way that Firefox doesn't support. ???

Burgomatic
Burgomatic Question owner
more options

That address just checks the Java-installation itself. Try this one (it's in Norwegian, but you should see the applet anyway. It's the (un)employment and social welfare dept in Norway. No viruses)

https://idporten.difi.no/opensso/UI/Login?realm=norge.no&goto=http://idporten.difi.no/opensso/SSORedirect/metaAlias/norge.no/idp2?ReqID=s23172d79660c7de1ad8b3f0aa5315d92863b99116&service=BankIDDetector&ForceAuth=&locale=nb&gx_charset=UTF-8

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

Thank you for the example. The page uses an <embed> tag with: 

type="application/x-java-applet;version=1.8"

But when I open the about:plugins page in Firefox (you can type or paste about:plugins in the address bar and press Enter), under Java(TM) Platform SE 8 U25, that content type is not listed -- it maxes out at 

application/x-java-applet;version=1.7

But maybe that isn't the issue, because the Java plugin still prompts me for permission to run the applet, and it's only after that that I get the "plugin needed" message.

The Oracle/Java test site uses an <applet> tag instead of an <embed> tag so that might bypass this issue.

Further research is definitely needed.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

That embed works for me with Java 8 (8u25) although I have to click and accept a lot security prompts to make the form appear (the second time is quicker: only two prompts).

If you have declined such a confirmation then you may have to clear the Java cache to get all alerts once again.

cor-el modificouno o