Firefox 4 has been released by Mozilla with lots of new features like tabs on top. But one thing you might have noticed the moment you started using Firefox 4 is that add-ons from the previous versions are all incompatible. You might have installed lots of add-ons on your previous version and these will not work on Firefox 4.0 beta version. But you can easily bypass this check and make all the add-ons compatible with Firefox 4.
If you open the add-ons page in your Firefox 4 (about:addons), you can see the incompatible add-ons.
Open up the about:config page (type it in the URL bar and enter) and then right-click anywhere in the about:config page and choose New –> Boolean.
Now in the pop up box enter the following values;
If you are using ;
- 4.0 Beta- extensions.checkCompatibility.4.0b
- 4.0 Release- extensions.checkCompatibility.4.0
Set this value to false.
Now you can make all your previously enabled add-ons to work with Firefox 4. All you need is to restart your browser. With this trick you can also install new add-ons which are still incompatible with latest version of Firefox.
Thanks to HowtoGeek for this tip.