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Firefox won't restart, I keep getting Mozilla Crask Report Error, even when I try it in safe mode or refresh

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  • Última resposta por cor-el

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Firefox keeps crashing and I'm unable to restart it, even when I try going to safe mode or hit refresh. No matter what I do, I keep getting the Mozilla Crash Reporter. Someone suggested downloading a fresh installer for Firefox 43.0.3 from https://www.mozilla.org/firefox/all/, but even when I do that I'm unable to open the browser.

Firefox keeps crashing and I'm unable to restart it, even when I try going to safe mode or hit refresh. No matter what I do, I keep getting the Mozilla Crash Reporter. Someone suggested downloading a fresh installer for Firefox 43.0.3 from https://www.mozilla.org/firefox/all/, but even when I do that I'm unable to open the browser.

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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.

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Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that helps.


Do a clean reinstall of the current Firefox release and delete the Firefox program folder before installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your personal data like bookmarks is stored in the Firefox profile folder, so you won't lose personal data when you uninstall and reinstall or update Firefox, but make sure NOT to remove personal data when you uninstall Firefox as that will remove all Firefox profile folders and you lose your personal data.

If you keep having problems then create a new profile.