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I cannot open a new tab in the firefox window

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When I click on the new tab nothing will open. I have also tried right clicking on the tab and selecting open a new tab and doing control + T. None of those will open a new tab though, how do I fix this?

When I click on the new tab nothing will open. I have also tried right clicking on the tab and selecting open a new tab and doing control + T. None of those will open a new tab though, how do I fix this?

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This issue can be caused by the Ask.com toolbar (Tools > Add-ons > Extensions)

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

See: