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

This thread was archived. Please ask a new question if you need help.

I'm getting a message on startup "Firefox has prevented the unsafe plugin Java Development Toolkit from running on www.mozilla.org continue blocking/allow".

  • 3 majibu
  • 9 wana tatizo hili
  • 13 views
  • Last reply by philipp

jimet
jimet
more options

The Check Plugins page says it's up-to-date. What gives here? Is there a problem with Firefox (33.1) or is the plugin out-of-date?

The Check Plugins page says it's up-to-date. What gives here? Is there a problem with Firefox (33.1) or is the plugin out-of-date?

Chosen solution

adobe has released a critical patch for a vulnerability in its flash plugin this week, which is reportedly already exploited in the wild. therefore firefox will block insecure versions from running by default on websites for your protection. https://helpx.adobe.com/security/products/flash-player/apsb14-27.html https://addons.mozilla.org/de/firefox/blocked/p798

please update to Adobe Flash Player version 16.0.0.235 as soon as possible, which you can download from http://www.adobe.com/products/flashplayer/distribution3.html (use the windows-exe for plugin-based browsers).

Read this answer in context 👍 0

All Replies (3)

the-edmeister
the-edmeister
  • Moderator
more options

Sorry, I can't tell you why that plugin might be needed on the Firefox Start Page.

Overall, that Java Development Toolkit isn't needed by the average user. Years ago that "Toolkit" was part of a separate developers "kit" from Java; consumers didn't get it when they installed the Java Run-time Environment.

About the only non-developer users who might need that "Toolkit" is users in institutional settings - like big corporations - who use other Oracle programs. Oracle bought Java from Sun Systems, the original developer of Java, a number of years ago.

Bottom line is that the Java Development Toolkit has some "holes" that make it exploitable on the Internet and Oracle refuses to patch those holes - so Mozilla disables that plugin. But each user is free to enable it as needed.

jimet
jimet Mwenye swali
more options

Thanks for your input.

I think somehow Firefox got demented and I need to reload it. It's now complaining about all plugins. E.g: I tried to print and it says Adobe Flash is out of date :-(

Oh well that's the life of software.

philipp
philipp
  • Moderator
more options

Suluhisho teule

adobe has released a critical patch for a vulnerability in its flash plugin this week, which is reportedly already exploited in the wild. therefore firefox will block insecure versions from running by default on websites for your protection. https://helpx.adobe.com/security/products/flash-player/apsb14-27.html https://addons.mozilla.org/de/firefox/blocked/p798

please update to Adobe Flash Player version 16.0.0.235 as soon as possible, which you can download from http://www.adobe.com/products/flashplayer/distribution3.html (use the windows-exe for plugin-based browsers).