This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox crashes on start up

  • 7 replies
  • 2 have this problem
  • 2 views
  • Last reply by Demi

more options

Firefox keeps crashing upon start up. Was lagging, shut it off and turned it back on and even after a reboot, I keep getting crashes. I have seen it mentioned that the Norton Toolbar seems to be the cause of it all. How do I fix this issue so I can boot my Firefox back up?

Firefox keeps crashing upon start up. Was lagging, shut it off and turned it back on and even after a reboot, I keep getting crashes. I have seen it mentioned that the Norton Toolbar seems to be the cause of it all. How do I fix this issue so I can boot my Firefox back up?

Chosen solution

thanks for providing the crash report id. we have seen quite a number of similar reports about this issue in the last hours and this issue is likely caused by your symantec security software that is hooking into firefox (probably through a program/signature update done by them). other users reported that updating firefox in this situation helped with the crashes. you can download & install the latest firefox from https://www.mozilla.org/en-US/firefox/all/

Read this answer in context 👍 0

All Replies (7)

more options

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.

more options

Well, this may screw me over in the end on this one but I don't typically submit crash reports. Should I submit one now just to get it to pop up?

more options

Crash ID: bp-abf2bbcc-f44d-4732-a5e2-33ff42160913

more options

Okay, it did work.

more options

Chosen Solution

thanks for providing the crash report id. we have seen quite a number of similar reports about this issue in the last hours and this issue is likely caused by your symantec security software that is hooking into firefox (probably through a program/signature update done by them). other users reported that updating firefox in this situation helped with the crashes. you can download & install the latest firefox from https://www.mozilla.org/en-US/firefox/all/

more options

Alright, downloading it now so let's see if this works.

more options

It seems to be working now! Thank you!