Could you check whether Firefox has recorded any crashes recently?

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 that into the "Post a Reply" box. (Please don't take a screenshot of your crashes, just copy and paste the ID's. The below image is just an example of what your Firefox screen should look like)

If none of the reports start with bp-, you can click the links to submit them, and then copy the address from the address bar.

bp-e4874e43-feb9-4a94-b80d-37aca2141202 11/11/2014 12:36 AM bp-7997d166-4675-46b4-9b07-ef0522141202 11/10/2014 12:08 AM bp-8aac5547-4bfe-40c8-801f-a31b62141202 11/4/2014 12:20 AM bp-9b2cb188-9561-40e8-b821-7591e2141202 11/3/2014 1:14 AM bp-8accf896-d70a-447b-bc32-eabfb2141202 11/2/2014 8:28 PM

There's no crash report listed from today, which is when the latest incident happened.

The two more recent ones are crashes in the Flash plugin. The three earlier ones terminate in a way that Firefox wasn't able to detemine exactly how it crashed.

It is interesting that this happens in the middle of the night. Can you think of any backup, security scan, disk cleanup, or privacy scrubbing processes that might be touching Firefox files around that time?

The Flash crashes are linked to a bug that indicates it is an unresolved issue with the Flash plugin's protected mode feature. That feature has security benefits, but seems to have compatibility issues on some systems. You can do this by creating or editing a settings file. The following pages/posts provide different approaches for that:

• Adobe support article under the heading "Last Resort": Adobe Forums: How do I troubleshoot Flash Player's protected mode for Firefox?

• Manual steps: https://support.mozilla.org/questions/968190?page=5#answer-509209

• Batch file to automate the manual steps: https://support.mozilla.org/questions/982093#answer-518078

Flash needs to completely unload from memory (exiting and starting Firefox up again might help) before this takes effect.

I can be on my computer until 4 am, so it's not unusual if Norton does a backup or scan that late. I don't know if that would affect it. I'll do this Flash fix, but none of this explains why 2-3 times I've had my browser close. I walk away for 30 minutes to an hour and come back to all the previous tabs closed and the home page open.

Can anyone advise how to fix this problem, because it happened again today and there is no crash report listed for today.