Force Extensions to Work in Firefox 3 Beta - gHacks Tech News

Force Extensions to Work in Firefox 3 Beta

The Beta version of Firefox 3 is already out and it has a whole bunch of new and improved features for you to play with. However, as of now, most Firefox extensions have not been updated by their developers. This means you cannot take your favorite add-ons for a spin in the Beta version.

I was checking out Lifehacker and a user called Bugmenot21 has posted a way to use your old extensions in Firefox 3. Now, I’m not a fan of this method since I prefer to wait till the developers themselves release compatible versions. Still, if you’re interested, you can give this a shot. I’m not guaranteeing anything though.

  • Open Firefox and type ‘about:config’ (without the quotation marks) in the address bar.
  • Right-click anywhere in the window and select New > Boolean. A box named new boolean value will open. Type extensions.checkUpdateSecurity in the preference field. Click OK. Set its value to False.
  • Similarly, create another new boolean value entry. This time, type extensions.checkCompatability. Like earlier, set the value to False.

That’s it. Now, all your extensions that were previously incompatible or did not secure updates should work in the Beta version. Be warned though that this is not a foolproof solution to the problem. Don’t be surprised if one or more of your extensions stats behaving strangely.

Do you know of any other ways to get extensions working in Firefox 3? Or would you prefer to wait till it becomes stable?

Update: Mozilla recently changed the way extension compatibility works in Firefox. Recent versions of the browser automatically assume that extensions are compatible provided they meet certain requirements. What this means is that it is usually no longer necessary to modify this preference or any other preference for that matter unless you try to make an old extension compatible with the browser. Note that forcing compatible won't make incompatible add-ons compatible again.


We need your help

Advertising revenue is falling fast across the Internet, and independently-run sites like Ghacks are hit hardest by it. The advertising model in its current form is coming to an end, and we have to find other ways to continue operating this site.

We are committed to keeping our content free and independent, which means no paywalls, no sponsored posts, no annoying ad formats or subscription fees.

If you like our content, and would like to help, please consider making a contribution:

Previous Post: «
Next Post: »


  1. TMiland said on February 15, 2008 at 12:34 am

    Hey, i’m using “Nightly Tester Tools” –>

  2. Robbin In the hood said on February 15, 2008 at 1:11 pm

    Hey this is way too cool. Thanks! I love tinkering around with new softwares and being the first user and show off to all my friends. Thanks

  3. Jedi said on February 15, 2008 at 1:13 pm

    Hey another valuable piece of advice. Cheryl you seem to be a well read person, keeping up with all the latest happenings in the digital world. What does an old timer like me need to do to meet a tech savvy chick like you :)

  4. Mathew said on February 15, 2008 at 1:15 pm

    What is a life hacker? Some kind of hacker hang out?

  5. Spinner said on February 15, 2008 at 5:03 pm

    I wouldn’t be too sure of doing something like this. I’m a patient guy and can wait till the bugs are out.

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

Please note that your comment may not appear immediately after you post it.