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Firefox crashes

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This article describes what to do if Firefox doesn't open when you click the Firefox icon. If you get a message you can dismiss (e.g. "TypeError: Components.classes['@ ... ;1'] is undefined", "onload error TypeError: ...", "Exc in ev handl: ...")
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The Mozilla Crash Reporter dialog box appears when Firefox closes unexpectedly and lets you submit a crash report to developers, to make future Firefox versions crash less often. This article describes how it works and shows you how to access your crash reports. For suggestions
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Note: This issue mainly affects Firefox 24 and above. However, if found, BitGuard should be removed from your computer. Note: This issue only affects Windows computers. If Firefox crashes frequently or crashes when starting, it may be due to BitGuard software installed on your computer.
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If you still have issues with Firefox crashes after trying the steps in Firefox crashes - Troubleshoot, prevent and get help fixing crashes, our support forum contributors can help. Please have the following information ready so we can assist you: Get the Report ID of your latest
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This article covers the situation where Firefox displays a message about crashing when you try to download files or save images. For other crash related issues, see the Firefox crashes - Troubleshoot, prevent and get help fixing crashes article. Firefox crashes when attempting
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Thanks for helping us by running these tests on your computer. You'll want to bookmark this page so you can come back to it later. It will also help to print these instructions out since you'll have to quit Firefox during the tests. Ok — let's get started! Click this
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REDIRECT Uninstall BitGuard to fix crashes with Firefox
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Note: This article only applies to Firefox 24. Firefox 24 users who have the Norton Toolbar installed may experience crashes. Norton is working on an update to fix this issue. Until then the workaround is to disable the Norton Toolbar: Click the menu button and
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We recently sent you an e-mail with new information about a Firefox crash report you submitted. This page answers the most common questions about these e-mails. Why are you sending me e-mail? Some time ago, Firefox crashed on your computer and you sent us a crash report using the
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You've ended up on this page because the crash report related to the report ID you clicked on was never submitted for some reason. To get help for crashes: Try to find another recent report ID in about:crashes with a submitted crash report. Then, for desktop Firefox, follow the
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