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Why am I unable to open multiple tabs in the browser? It all of a sudden refused to let me open more than one at a time.

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  • 47 have this problem
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  • Last reply by cor-el

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While on the internet, I tried to open two tabs, but it won't open any more for me. I tried right clicking and opening that way, but it won't let me. I removed Mozilla Firefox from my computer and re-downloaded it, but it still won't let me open more than one tab. It's happened to two of my computers now, and nothing works for either one except opening in safe mode every time.

While on the internet, I tried to open two tabs, but it won't open any more for me. I tried right clicking and opening that way, but it won't let me. I removed Mozilla Firefox from my computer and re-downloaded it, but it still won't let me open more than one tab. It's happened to two of my computers now, and nothing works for either one except opening in safe mode every time.

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See:

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")