Your posting information indicates you are already using Thunderbird 140.9.1 esr.

Hi Wayne, When I downloaded & updated TB to 140.9.1 ESR It gave me nothing but MAJOR GRIEF It Totally Stuffed up all on TB,I could not even reply to emails just for Starters The Onbly Way I could Recfity it was to Delete TB & Go into Registry & Delete all TB for which hours,as even the 1st version was still listed in TB Now that the Desktop was 100% clear of TB I Copied (from my Laptop) The Tb Settings in Program to a USB Stick & then went into profiles in Roaming & Copied TB onto a USB Stick I then put the USB sticks into my Desktop & copied the data into Programs & Roaming & it worked excellently No other way would work & I tried several