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I can no longer open more than one firefox window, using Vista 64. Any ideas?

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I used to be able to open several Firefox windows by simply double clicking the Firefox icon 2 or 3 times to have several web pages open at the same time. This has stopped working now I can only open one.

I used to be able to open several Firefox windows by simply double clicking the Firefox icon 2 or 3 times to have several web pages open at the same time. This has stopped working now I can only open one.

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

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems


Do you have security software that has advanced features and can block pop-ups?