We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

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

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

bp-a1c75389-6355-4512-bf83-0c01b2161006 06/10/2016 07:59 bp-2673f977-2c83-4abc-aa6e-80b482161003 02/10/2016 21:27 bp-ca67f4a7-89e6-4a5b-a8a1-a5eb82160825 24/08/2016 21:24 bp-9ed0a35c-9f4b-44ba-a719-c6f4d2160823 23/08/2016 19:10

Looks like those crashes are related to Sophos Endpoint Software.

Mozilla is working on a fix for startup crashes that are related to Endpoint used by other security applications; may be related.

Sophos is installed since many years on my PC and I have been using Firefox for the last couple of years as well. Why is the crash happening since few days only and what can I do? Wait for the fix or change browser, because it is delicate when I am in the middle of a form or paying through a secure connection as date is getting lost. The freezing occurs without any activity from my side, it already happened now when I was just typing my text here! Thank you