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I can't get a new tab to open, either by pressing the + sign, going to file new tab or by right clicking and selecting new tab. What's the problem?

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I can't get a new tab to open. I've tried pressing the + sign, going to file-new tab and by right clicking and selecting new tab. Why won't a new tab open?

I can't get a new tab to open. I've tried pressing the + sign, going to file-new tab and by right clicking and selecting new tab. Why won't a new tab open?

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Try "Ctrl+T" for a new tab.

known to create problems: ask.com & FoxTab

https://support.mozilla.com/questions/844479