Firefox gemenskapsforum

I just tried to open Firefox and got the message "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem". DO NOT redirect to this link

https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional?as=u&utm_source=inproduct&redirectslug=The+bookmarks+and+history+system+will+not+be+functional&redirectlocale=en-US

It is useless. I tried to restore 3953 items from a previous back up and received the message "Unable to process the backup file".

I am not interested in hearing how to prevent this problem in the future, because obviously creating backups do not work.

How do I check to see if the problem was caused by security software, even though I have not added anything?

On Weddnesday evening I switched on my desktop computer and was ligging into an on line drawing classsite which would give me access to a Class on Zoom when notification of an update for Firefox appeared on the screen. I think the message was that the update would be downloaded and then the computer would do a restart. I think the download occurred but not the restart. I was then logged onto the site and clicked to join the class. I was only on about 20 minutes as Zoom kept dropping outto the zoom login screen. After this happened about 5 times I gave up and switched the computer off. On Monday I logged onto aother zoom class via the came site and againthe Zoom class kept dropping me out to the login screen although a couple of times it went back in on its own. I have contacted the Zoom Help and seemed to be typing to a badly programmed AI robot and could not get it to understand I didn't want to know about setting up my mic and camera. Please be warned I'm retired and not good with electrons and IT speak etc.