You can create a new profile as a quick test to see if your current profile is causing the problem.

See "Creating a profile":

• https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

If the new profile works, you can transfer files from a previously used profile to the new profile, but be careful not to copy corrupted files to avoid carrying over problems.

• https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

Thanks but no joy. I set up a new profile (without transfering any files, bookmarks etc); but experienced exactly the same problems. The FireFox home page seemed to load OK, but any other search or page link created a Tab crash error.

It looks like IBM Trusteer is injecting their DLL into Firefox, and that creates some problems.

Go to about:third-party and try to disable crashing DLLs, if there's any.

https://hacks.mozilla.org/2023/03/letting-users-block-injected-third-party-dlls-in-firefox/

Note that the crash report is from CrashTime : Sun, Sep 24 2023 13:16:56 GMT with Firefox 117.0.1 Crash Report [@ AsyncShutdownTimeout | places.sqlite#1: waiting for clients | places.sqlite#1: History.jsm: update (8) ]

No joy. There are no flagged crashing third-party DLLs. I tried blocking IBM Trusteer DLL and restarted FireFox; but still getting same problem.

Try to start Firefox in Troubleshoot Mode to see if that works.

• Windows: hold down the Shift key while starting Firefox
• Mac: hold down the Options key while starting Firefox

• https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode

I've run Firefox in Troubleshoot Mode, but with the same crash error.