Hi,

Could you please add a screenshot of what you see? Also, do you still have no access to your data?

Thanks for your reply, Denys. No, didn't take a screenshot. Was eventually able to find a way to 'Refresh' the browser access. After the refresh, access was restored. Things looked quite different, though, and I had to do quite a bit of tidying up. Took ages. I have no doubt that early on Firefox thought I was running Windows 10 (when I wasn't), and seemed to block me out in processing the fact that Windows 10 is no longer supported. When I first accessed Firefox (in my usual way), it seemed to do some kind of an update, that made no sense to me, and early in the 'crash' I MAY have clicked on something that I shouldn't have, but not sure, and can't go back and check now. All ok now, but hope it doesn't happen again, or that anyone else falls to the same issue.

Thanks. Will do as you suggest. Appreciate your prompt support.

Appreciate your prompt support.

This is solved, really, but a folder has mysteriously appeared on my desktop, named "Old Firefox Data", full of files I can't open or understand. Let me know if this is of any interest, in coming to an understanding of the 'strange' events my Firefox experienced three days ago.

Refreshing Firefox creates that folder. Basically, it contains your old data (including the data that has been cleared). You can use this folder to restore some of them.