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 and does not open even in safe mode, even after clean install

more options

Hi,

My Firefox crashes and does not open, after after clean install, even after restore option (removal of all profiles...). It happened after a Windows update operated in my firm.

Maybe should I try to install a previous version of Firefox?

Thanks Chawki

Hi, My Firefox crashes and does not open, after after clean install, even after restore option (removal of all profiles...). It happened after a Windows update operated in my firm. Maybe should I try to install a previous version of Firefox? Thanks Chawki

All Replies (5)

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

Hi all,

My submitted report crashes are attached in the screenshot.

Thanks

more options

Hi,thanks:

bp-90e8dfa3-252c-4385-a042-29e812151125 bp-96ed14c0-73f4-40bd-aef7-865fc2151125 bp-d5b12254-724c-4e0a-8199-85d642151125 bp-26840d68-d2ef-4dc6-b8e3-b76b22151125 bp-3fc6f1b7-871a-4db5-8bff-590092151125 bp-d6aaa128-c846-443b-81ba-6a29c2151125

Thanks

more options

ok thanks for providing those crash ids - unfortunately this crash may be caused by websense endpoint security software that is running on a device. websense has released an updated version (8.1.2224) which may address the issue.

in case your computer is part of a managed enterprise environment, please get in contact with your it department about this issue. more information is available in bug 1181091.

in a larger enterprise using the extended support release (esr) version of firefox, which receives security updates but feature updates only once every 10 months, might also be a better option compatibility-wise: https://www.mozilla.org/en-US/firefox/organizations/faq/

more options

A million thanks, Phillips. I will see with my IT people.

Best,