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When I try to open a bookmark I get a box that says "what should firefox do with this file?" When I try to change the "open with Internet Explorer" I can't find firefox ? Last week this bookmark worked fine.

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When I open a bookmark a box pops up that says "What should firefox do with this file? "open with Internet Explorer? When I browse I can't find firefox to change to. Last week this book mark worked perfectly.

When I open a bookmark a box pops up that says "What should firefox do with this file? "open with Internet Explorer? When I browse I can't find firefox to change to. Last week this book mark worked perfectly.

Chosen solution

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

If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. You can use "Disable all add-ons" on the Safe mode start window. You have to close and restart Firefox after each change via "File > Exit" (on Mac: "Firefox > Quit")

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Chosen Solution

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

If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. You can use "Disable all add-ons" on the Safe mode start window. You have to close and restart Firefox after each change via "File > Exit" (on Mac: "Firefox > Quit")