When I start Firefox, I get the following (RED highlighted) 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"

https://i.postimg.cc/6pdY2t0z/The-bookmarks-and-history-system-will-not-be-functional-because-one-of-Firefox-s-files-is-in-use-by.png

What happened just before this was...

In the middle of the night, I noticed my computer was busy churning
away. Not sure why so I shutdown the internet (to prevent unwelcomed
cyber activity). Then, the RED message keeps popping up when I start
Firefox.

Any ideas ?

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On 12/12/2021 10:40 AM, Adam wrote:

When I start Firefox, I get the following (RED highlighted) 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"

https://i.postimg.cc/6pdY2t0z/The-bookmarks-and-history-system-will-not-be-functional-because-one-of-Firefox-s-files-is-in-use-by.png

What happened just before this was...

In the middle of the night, I noticed my computer was busy churning
away. Not sure why so I shutdown the internet (to prevent unwelcomed
cyber activity). Then, the RED message keeps popping up when I start
Firefox.

Any ideas ?

Fix "The bookmarks and history system will not be functional" error message https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional

Solution 1: Restart your computer

Worked like a charm.

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)