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.

Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox program folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Firefox ESR; Extended Support Release {web link}

Beta, Developer, Nightly versions https://www.mozilla.org/en-US/firefox/channel/desktop/

Install Older Version Of Firefox {web link} Be sure to read everything here.

Download and save the program you want. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

How to Start all Computers in Safe Mode; {web link} Free Online Encyclopedia

In the address box, type about:crashes<enter>. Note: If any reports do not have BP- in front of the numbers/letters, click it to submit them.

The crash report is several pages of data. We need the report numbers to see the whole report.

Using your mouse, mark the most recent 7 - 10 Submitted crash reports, and copy them. Now go to the reply box and paste them in.

Please, Do not post a screenshot ! !

For more help on crash reports, see; https://support.mozilla.org/en-US/kb/firefox-crashes-asking-support

Here are all the crash reports so far. Thanks.

bp-0c2b5fab-2fa6-4117-8b22-89bfb0220508 5/8/2022, 3:07 PM bp-12a08724-aab4-4a68-87e5-e5e070220508 5/8/2022, 2:13 PM bp-da1db46f-04bd-4fbe-851a-db2460220508 5/8/2022, 1:53 PM bp-8713e302-929e-45fe-8259-8c69f0220508 5/8/2022, 1:53 PM bp-9a3f9fc4-f50f-454d-9b9b-f68160220508 5/8/2022, 1:53 PM bp-8003b6a7-5293-4634-b841-13c450220508 5/8/2022, 12:36 PM bp-74fbb197-f4e5-4932-9b90-cc2e80220508 5/8/2022, 12:36 PM bp-63313640-7ae2-4f72-8cef-ec89c0220508 5/8/2022, 12:36 PM bp-34b6e665-f5ed-47d1-b101-6dbd70220508 5/8/2022, 12:36 PM bp-c503d373-7e73-4e40-9149-f9d070220508 5/8/2022, 12:36 PM bp-c9fc1754-541a-48af-8137-5c6d90220508 5/8/2022, 12:36 PM bp-00b1c5f1-9aef-4242-bfc3-a7fe60220508 5/8/2022, 12:36 PM bp-7de2de08-be93-4e5a-9007-ae7370220508 5/8/2022, 12:36 PM bp-cf11a29e-8824-45bc-b316-cc93d0220508 5/8/2022, 12:36 PM bp-c18062c1-50ec-47d5-a93c-9a86c0220508 5/8/2022, 12:36 PM bp-c0351616-44b0-44e3-9689-a98ac0220508 5/8/2022, 11:08 AM bp-5bd8ec4f-f11f-458b-a70e-9de660220508 5/8/2022, 2:54 AM bp-94d1af22-c6b6-4368-b1db-619380220508 5/7/2022, 8:32 PM bp-b33725b6-484d-4dfb-98a5-6043b0220505 5/4/2022, 10:49 PM bp-e674609e-777c-4abb-a99a-018160220505 5/4/2022, 9:59 PM

bp-0c2b5fab-2fa6-4117-8b22-89bfb0220508 - Uptime 79 seconds (1 minute and 19 seconds) bp-12a08724-aab4-4a68-87e5-e5e070220508 - Uptime 74 seconds (1 minute and 14 seconds) bp-da1db46f-04bd-4fbe-851a-db2460220508 - Uptime 66 seconds (1 minute and 6 seconds) bp-8713e302-929e-45fe-8259-8c69f0220508 - 65 seconds (1 minute and 5 seconds)

Signature: mozilla::loader::ImportModule

MOZ_CRASH Reason (Sanitized) : Failed to load critical module "resource://gre/modules/WebNavigation.jsm"

Crash Reason EXCEPTION_BREAKPOINT

This is for Sumo's Related Bugs 1724000 NEW --- Crash in [@ mozilla::loader::ImportModule]

Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox program folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Firefox ESR; Extended Support Release {web link}

Beta, Developer, Nightly versions https://www.mozilla.org/en-US/firefox/channel/desktop/

Install Older Version Of Firefox {web link} Be sure to read everything here.

Download and save the program you want. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

How to Start all Computers in Safe Mode; {web link} Free Online Encyclopedia

I've already done a re-install and I tried booting my computer into Safe Mood. While in Safe Mode I was able to restore one of the windows but not the other, and for some reason I couldn't navigate through the tabs. After that it crashed again and I was unable to get anything to come back.

bp-5f3e1bad-52cd-4938-8a72-dd7090220509 5/9/2022, 2:23 AM bp-eebeff15-51b3-492f-a0ca-08b330220509 5/9/2022, 2:05 AM bp-2564cda1-f535-4e2b-bf91-2daaa0220509 5/9/2022, 1:39 AM bp-c0bd8f8d-1368-4388-b389-b33460220509 5/9/2022, 1:39 AM bp-6d12f9f9-248a-4198-aa73-b60ec0220509 5/9/2022, 1:39 AM bp-84fb13f8-6188-463c-9879-79e460220509 5/9/2022, 1:05 AM bp-fc1434ea-ddb8-4a20-bf2c-1cafe0220509 5/9/2022, 1:04 AM bp-ce350791-4b35-4474-8fb4-561c10220509 5/9/2022, 1:04 AM bp-3c3980eb-8dc8-423d-80a4-87c030220509 5/9/2022, 1:03 AM

I did yet another clean reinstall and now the profile folder no long shows up at all. In the root/roaming directory it removed all the contents and replaced it with a parent.lock file. Thankfully I had a copy of the folder so I copied over the prior contents, however because there's no longer a folder for it in the local directory it doesn't show up as a profile. I was able to set up a new profile using the prior folder which worked to bring the profile back, but it still crashes. There has to be a fix for this. I really need my windows and tabs back.

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 box. How many profiles are listed? How many should be there? Also, open the profile folder in your file explorer.

https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

I got the profile back by creating a new profile using the folder from the previous profile. But it's still crashing. I've tried everything you've suggested and it still doesn't work. I even tried an opening an older profile which didn't work either. I really hope there's a fix for this, I really need my windows and tabs back.

TMan11 said

After that it crashed again and I was unable to get anything to come back.

The new crash reports you posted are the same are the other reports.

Are you able to find the original profile?

Also Look on your desktop. Do you see a folder called; Old Firefox? Look inside. Look for the folder with the latest creation date.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

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

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

https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

Yes I did find the old profile in the Old Firefox Data. I'm still having the same issues of crashing when trying to open it. We're back to the original problem and nothing has fixed it.

I called for more help.

Thank you. I copied the profile folder onto a USB drive and copied it to my laptop. It worked on my laptop because it opened in a different version of Firefox, so it seems that Version 100 is definitely the culprit. When I tried to open it on my Laptop with Version 100 it eventually loaded but either not all the tabs load or one of the windows doesn't, and then it went back to crashing constantly again. The previous version was Firefox 56 that was installed through the Microsoft App Store. It worked there and while it was loading I would get an Unresponsive Script pop-up which said the script responsible was chrome://browser/content/tabbrowser.xml:7585, however I kept clicking continue and it eventually all showed up. I unfortunately uninstalled the prior version of Firefox which I should've kept considering it worked there. There must be something going on with Version 100 that is preventing everything from being restored.

easy Crashing play video facebook, youtube, instagram, before no crash (version 99)

FireFox just updated to v106.0.1 (23rd October 2022), now, after 2 minutes of use, it crashes with a blank screen stating it is 'not responding'. Nothing on my laptop has changed apart from the update. I have no interest in diagosing your fault, as common sense tells you that if you change something, and a fault immediately arises, it is the change that is the cause.

Just curious, if you are going to fix it with yet another update, or after 20 odd years, do I just change browser?