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

Why does my Firefox not have a Java plug-in?

  • 8 replies
  • 1 has this problem
  • Last reply by marty39

more options

I'm on a Mac, running with OS X Version 10.11.3, "El Capitan".

I just updated Java to Java 8 Update 73, the latest. Firefox is updated automatically and is now Firefox 44.0.2. Java fails verification on with the message "We are unable to verify if Java is currently installed and enabled in your browser." The Java plugin is not listed on the plugins list page in Firefox (Tools / Add-ons / Plugins).

This is a replay of a question I asked about two years ago (archived, at The versions are later. Firefox was starting in 32 bit mode, but this time unchecking that didn't help. Also this time, I "refreshed" Firefox, which I did not do last time, but that only helped temporarily.

Sometimes, when I'm lucky, I can verify the latest Java update on When Firefox is then closed, JavaAppletPlugin.plugin is listed in the [PLUGINS] section of pluginreg.dat. After Firefox is restarted, JavaAppletPlugin.plugin is listed in pluginreg.dat in the [INVALID] section, and Java verification fails.

All Replies (8)

more options

Type about:addons<enter> in the address bar to open the Add-ons Manager. Hot key; <Control>(Mac=<Command>) <Shift> A)

On the left side of the page, select Plugins. Make sure the ones you want to use are set to Ask or Allow.

Go to the web page. Once the page is loading, mouse to the address bar and Left click the icon. A window for displaying site information should come up. Select More Information. Now select Permissions. In the menu, Make sure the ones you want to use are set to Ask or Allow.

more options

FredMcD wrote "Make sure the ones you want to use are set to Ask or Allow." Problem is, one of those I want to use (Java) isn't there at all.

more options

Java Downloads for All Operating Systems

Make sure your Java (Not JavaScript) is up to date Verify Java and Find Out-of-Date Versions {web link}

Version 8 Update 73 Release Date February 5, 2016 Java Help Center

more options

FredMcD, thanks for your eagerness to help, but read my question. Don't make me repeat myself.

more options

Have you checked the Java Help Center link?

more options

Fred, I checked every link I could find. Suggestions to mark the plugin as enabled are pointless because the plugin isn't there to enable. As I said, I went so far as to "refresh" Firefox, and I thought it helped but I'm back where I didn't want to be. I'm waiting for somebody to suggest something specific I could do.

Update: I didn't at first see the Help link on the verification page; I followed the troubleshooting link. I just went to the Java Help Center through the Help link, and there isn't anything there about "Why can't Java be detected and verified after I update to the latest version?" I found a link to pay support, but I don't think I need Java enough to pay them to fix a bug.

Modified by marty39

more options

I've called the big guys to help you. Good luck.

more options

For no obvious reason, after the last Java update the verification on the website succeeded, and the plugins list now includes a "Java Applet Plug-in."