Форум поддержки Firefox

My OS is Catalina 10.15.4. Firefox worked fine until today. I have removed and reinstalled Firefox. I have setup a new profile. Firefox will not open in safe mode.

What else should I do?

Hello! I am running firefox-esr version 68.5.0esr-1+b1 (from Debian testing) with a bunch of extensions (ublock origin, multi containers, suspend tab, open in browser, all in one sidebar, etc). Yesterday, I was suddenly unable to start firefox. I can see the profile manager and start another older profile, but not the one I really need to open. When I start from a terminal, I see this error message most of the time:

 ###!!! [Child][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost

I have created a new profile and started it with success; after copying all files from the faulty profile, the new one does not start.

I have tried to run with safe mode: still does not start.

I have found https://unix.stackexchange.com/questions/426502/firefox-keeps-crashing-upon-launch/466522 which doesn't help.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile shows me how to copy bookmarks and cookies over. (I am not using any synchronization service.) I would very much like not losing my session (open tabs), but I don't know which file or database is holding it.

I would prefer not to have to spend a lot of time reinstalling and reconfiguring all extensions, but maybe it will be necessary. Thanks for any help troubleshooting this.

During class today, Firefox unexpectedly crashed on my Windows 10 PC after downloading a pdf file from my History teacher. Now, when I try to open Firefox, a transparent box quickly appears before disappearing again, not opening Firefox. I have yet to find a solution that has worked.