We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.

1. On the keyboard, press [Windows] The image "Windows key" does not exist. + [R]. This should bring up a Run window that contains a text field.
2. In that text field, type %APPDATA% and press Enter. An explorer window should open.
3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
4. Now, you should see a list of files that contain reports. Go to View > Arrange Icons by > Modified to get the most recent files at the top of the window.
5. Open the most recent 5 files with a text editor and copy the IDs.
6. Paste each ID with bp- into the reply window on the forums.

Thanks in advance!

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Start your Computer in safe mode with network support. Then start Firefox. Try Secure websites. Is the problem still there?

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode Starting Any Computer In Safe Mode; Free Online Encyclopedia

Thanks. Just to provide more clarity on the issue: When I try to launch Firefox, a dialog box pops up that says the following:

Firefox has stopped working

A problem caused the program to stop working correctly. Please close the program.

For some reason if I re-download the browser (e.g., from Chrome) it will open and I can use it just fine. Once I close the browser and then try to launch again, the above dialog box appears again. So for some odd reason I can use firefox as long as I re-download every time (which is obviously not efficient).

I restarted by going to help, restart with add ons disabled (and then a box came up telling me it was safe mode) and it would re-launch--but if I closed the browser normally and re-launch again the problem reappears.

In terms of the crash reports folder, I followed the suggestion but there was nothing in the folder.

Lastly, I don't know if this is a coincidence, but last night I downloaded the most recent version of firefox (the update from 10/28 I believe) so I don't know if something in that update has caused the problem.

. . . . So for some odd reason I can use firefox as long as I re-download every time

Save the downloaded installer in case you need it again.

Use these links to create a new profile. Use this new profile as is. Is the problem still there?

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar.

unfortunately nothing seems to work. The only way for me to use the browser is reinstall it every day.