I have version 9.0.1 on 2 pc, both xp sp3. 1 the button "open new tab" is visible, on the other hand, the "Open new tab" button is not yet available in the menu "Customize toolbar" drag / drop. Why?

I used the same setup file, but on 1 pc, the "Open new tab" button is available in the menu 'Customize toolbar' and can be dragged and drop on the navigation bar. On the other pc, the "Open new tab" button/icon is not yet available for drag / drop. I uninstalled firefox completely, including the settings and preferences, then reinstalled, but that has not fixed the missing button.

Hello

Please try to restore the default value in the Customize... window. If it is still not visible, one of the reasons could be that the button is already placed on the toolbar, but can be hidden behind a different icon or toolbar.

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