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How to fix close tab button missing in Firefox

How to fix close tab button missing in Firefox

by AshwinJanuary 20, 2016

Mozilla Firefox, maybe the second most used browser in the World behind Google Chrome (not counting Internet Explorer).

Firefox Close tab button missing

That however does not mean the browser is devoid of bugs, in fact there are plenty of those, but mostly caused by the add-ons which we use.

Recently my friend reported that his Firefox crashed, and after he opened the browser, he said that the close button was missing in every single tab. I asked him if he saw an X button at the end of the tabs (on the right), and it was not there.

Tip: You can close individual Firefox tabs by hovering over a tab, and pressing the middle button on the mouse (the scroll-wheel). Alternatively you can also press the key combo Control + F4 or Control + W which will close the tab you have opened.

We were able to close tabs fine using the above tip, but that wasn’t our worry. How to add the close tab button back to each tab was the issue?

The issue in question, is caused by Tab Mix Plus. The add-on is infinitely useful, but some of its settings can be a little too much for the layman.But not to worry, we’re here to help.

How to fix close tab button missing in Firefox

1.Click on the Firefox Menu and select Add-ons. Or just type about:addons in the address bar and hit enter.

Tab Mix Plus

2. Scroll down to “Tab Mix Plus” and click on the “options” button next to it, to tweak the settings for the add-on.

Tab Mix Plus - Close Tab button disabled
3. Now a small pop-up window should appear, click on Display > Tab and look at the Show on Tab option, under which there is a setting for “Close Tab Button”. Ensure that the button is checked (enabled).

4. If not, enable it and then click on the apply button.

Et viola! The close tab button should now appear on every tab. You don’t even have to restart your browser for this to work.

Tab Mix Plus - Close Tab button enabled

If the above fix doesn’t work for you, please try starting Firefox in Safe Mode with add-ons disabled, or manually disable all add-ons and start the browser with one add-on enabled to see if that resolves your issue.

Note: The problem with Tab Mix Plus’ settings is that it, ironically has a “tab bar” settings button placed before the “tab” settings button. Both of these settings have a close tab button option, but they are for completely different purposes.  Yet this does to confuse a few users.

It is also worth mentioning that, back in April 2014, Mozilla removed the close button from each tab in Firefox 29. Yet another classic example of the browser going downhill.