To determine which of your disabled extensions was causing your problem, you can re-enable each extension one at a time.
- At the top of the Firefox window, click on the Firefox button ( menu in Windows XP), and then click On the menu bar, click on the menu, and then click At the top of the Firefox window, click on the menu, and then click . The Add-ons Manager tab will openAt the top of the Firefox window, click on the menu, and select On the menu bar, click on the menu, and select At the top of the Firefox window, click on the menu, and select . The Add-ons window will open.
- In the Add-ons window, select the panel.
Manager tab
- Click the name of an extension in the list to select it.
- Click Enable to enable the selected extension.
- Click Restart Firefox.
After you restart Firefox, test for your problem. If the problem comes back, the extension you just enabled was causing it.
Note: If you have a large number of
extensions, it may be quicker to enable more than one extension at a
time. The method with the fewest number of restarts required is: Enable
half the extensions in this list, then restart Firefox and test for the
problem. If the problem reoccurs, you know that the faulty extension is
one of the ones you just enabled. If the problem does not occur, you
know the faulty extension is one of the disabled ones. Repeat the
process until the faulty extension is found.
After you find the extension that was causing your problem, disable
or uninstall the faulty extension and re-enable the other extensions in
the Add-ons window.
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Mozilla Firefox crashing - Test for faulty extensions