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Java Plugin blocked and no option to enable anymore

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Yesterday we received the message that our version of "Java has been blocked for your protection".

However, we were able to bypass dis-abling the Plugin. Today, the soft block has turned into a hard block and the browser has disabled the Java Plugin and doesn't provide the ability to re-enable it.

Our technology group can re-enable the Java Plugin through about:config, but we cannot expect or want our users to attempt this action.

We are using an IBM product which currently requires Java 1.6.0_23 and no higher.

We have varying levels of Firefox in use (from 9.x to 11.0).

We need to be able to enable the Java Plugin. Our only alternative is to restrict users from Firefox and only use IE.

Yesterday we received the message that our version of "Java has been blocked for your protection". However, we were able to bypass dis-abling the Plugin. Today, the soft block has turned into a hard block and the browser has disabled the Java Plugin and doesn't provide the ability to re-enable it. Our technology group can re-enable the Java Plugin through about:config, but we cannot expect or want our users to attempt this action. We are using an IBM product which currently requires Java 1.6.0_23 and no higher. We have varying levels of Firefox in use (from 9.x to 11.0). We need to be able to enable the Java Plugin. Our only alternative is to restrict users from Firefox and only use IE.

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darkeval 0 solutions 2 answers

Firefox is useless to me without the Java 1.6.0_23 Plugin. My computer does not support any newer versions, and without it I cannot access my bank account. Therefore I need to know how I can unblock it, or which version of Firefox I can roll back to so that I can continue using this plugin. I'm currently using Firefox 5.0, is there an older version I can use with this plugin? My only other option is to stop using Firefox and only using Opera from now on.

Firefox is useless to me without the Java 1.6.0_23 Plugin. My computer does not support any newer versions, and without it I cannot access my bank account. Therefore I need to know how I can unblock it, or which version of Firefox I can roll back to so that I can continue using this plugin. I'm currently using Firefox 5.0, is there an older version I can use with this plugin? My only other option is to stop using Firefox and only using Opera from now on.

Helpful Reply

You can enter "about:config" in your address bar.

Then locate extensions.blocklist.enabled and set it to false (To set to false, double-click it)

But, you will be dis-abling the entire blocklist, not just java.

You can enter "about:config" in your address bar. Then locate extensions.blocklist.enabled and set it to false (To set to false, double-click it) But, you will be dis-abling the entire blocklist, not just java.
darkeval 0 solutions 2 answers

Thanks! Now I can continue using Firefox.

Thanks! Now I can continue using Firefox.
magiclantern 0 solutions 2 answers

Changing extensions.blocklist.enabled to false doesn't work for me with Firefox 11 on WinXP. My JRE plugin is still disabled and I can't enable it. Due to other requirements, I cannot update my JRE plugin.

After posting the above, I tried something that works, but has undesirable side effects: If I completely remove my user preferences directory (C:\Documents and Settings\myuser\Application Data\Mozilla), all plugins are re-enabled, and then I can quickly change the blocklist setting. This does mean my java plugin isn't disabled, but I loose history, bookmarks, etc.

Anyone know a better way to re-enable a blocklisted plugin?

Changing extensions.blocklist.enabled to false doesn't work for me with Firefox 11 on WinXP. My JRE plugin is still disabled and I can't enable it. Due to other requirements, I cannot update my JRE plugin. After posting the above, I tried something that works, but has undesirable side effects: If I completely remove my user preferences directory (C:\Documents and Settings\myuser\Application Data\Mozilla), all plugins are re-enabled, and then I can quickly change the blocklist setting. This does mean my java plugin isn't disabled, but I loose history, bookmarks, etc. Anyone know a better way to re-enable a blocklisted plugin?

Modified by magiclantern

cor-el
  • Top 10 Contributor
  • Moderator
15715 solutions 142074 answers

Helpful Reply

You need to delete the blocklist.xml file in the Firefox Profile Folder.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder
You need to delete the blocklist.xml file in the Firefox Profile Folder. You can use this button to go to the Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Open Containing Folder
magiclantern 0 solutions 2 answers

Thanks!

Deleting the blocklist.xml file works for Firefox 11. I can now go in and re-enable the JRE plugin if I want.

Thanks! Deleting the blocklist.xml file works for Firefox 11. I can now go in and re-enable the JRE plugin if I want.
AngelHerreros 0 solutions 1 answers

Deleting blocklist.xml and blocking extensions.blocklist.enabled has not worked for me. Running firefox 3.0.3 on an older G4 Mac (so upgrading firefox or flash is NOT an option). I keep getting the "blocked for your protection" instead of flash, and get no pption to reactivate, nor uninstall (to reinstall it), flash. Any idea? (other than deleting Firefox and -gasp- using IE)

Deleting blocklist.xml and blocking extensions.blocklist.enabled has not worked for me. Running firefox 3.0.3 on an older G4 Mac (so upgrading firefox or flash is NOT an option). I keep getting the "blocked for your protection" instead of flash, and get no pption to reactivate, nor uninstall (to reinstall it), flash. Any idea? (other than deleting Firefox and -gasp- using IE)
cor-el
  • Top 10 Contributor
  • Moderator
15715 solutions 142074 answers

You can try to delete the pluginreg.dat file.

You did also remove the blocklist.xml file in the Firefox Profile Folder?

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Open Containing Folder
You can try to delete the pluginreg.dat file. You did also remove the blocklist.xml file in the Firefox Profile Folder? You can use this button to go to the Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Open Containing Folder
AliceWyman
  • Moderator
229 solutions 2491 answers

AngelHerreros, you said you are using Firefox 3.0.3? You can use the "Help > Troubleshooting Information" page to open the Firefox profile folder in Firefox 3.6 and above. See http://kb.mozillazine.org/Profile_folder_-_Firefox#Finding_the_profile_folder if you are using an older Firefox version

'''AngelHerreros,''' you said you are using Firefox 3.0.3? You can use the "Help > Troubleshooting Information" page to open the Firefox profile folder in Firefox 3.6 and above. See http://kb.mozillazine.org/Profile_folder_-_Firefox#Finding_the_profile_folder if you are using an older Firefox version
cor-el
  • Top 10 Contributor
  • Moderator
15715 solutions 142074 answers

See also:

You can find the latest Firefox release in all languages and for all Operating Systems here:

See also: *https://support.mozilla.org/kb/Finding+your+Firefox+version You can find the latest Firefox release in all languages and for all Operating Systems here: *Firefox 3.6: http://www.mozilla.org/en-US/firefox/all-older.html