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 list of Submitted/Unsubmitted Crash Reports will appear, similar to the one shown below.
2. Copy the 5 most recent Submitted 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.

Thanks for your reply, Ty. Crash report ID's are below. I'm not sure if it's an actual crash that happens, though. Firefox just closes itself after opening for a couple of seconds. The 2nd report down is from yesterday.

bp-367b9557-f0ce-48ca-9d66-2a4770220803 bp-e8f45ce7-6239-4343-aa02-761d30221123 bp-02a741a1-34a0-4690-b8f8-5c4e00221123 bp-45a4a67c-a1a5-444e-b68b-f61330221123

Thanks for your help.

Tricia

I guess it's something due to NetSight or MalwareBytes.

So why would this suddenly start happening?

IDK. A lot of crashes is restricted to a very specific config.

You can check for issues with Storage (indexedDB).

• https://firefox-storage-test.glitch.me/

You can create a new profile as a quick test to see if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

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

Turns out this was something to do with Thunderbird. It was the only thing that I'd changed so I uninstalled it and everything is working perfectly again.