The "new tab" feature does not open a new tab. Why?
When I click on the + sign to open a new tab, or click File, new tab, or try Command T for a new tab, nothing happens. What do I need to correct so a new tab will open?
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Start Firefox in Safe Mode {web Link} by holding down the <Shift (Mac Options) > key, and then starting Firefox. Is the problem still there?
Still doesn't work.
Type about:config<enter> in the address bar. If a warning screen comes up, press the Be Careful button. This is where Firefox finds information it needs to run. At the top of the screen is a search bar. Type newtab
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Thank you!