Thunderbird

Bonjour,
Ma messagerie Thunderbird (plusieurs comptes actifs) semble fonctionner correctement, mais depuis quelques semaines s'ouvre une fenêtre d'erreur (en pièce jointe) dont je n'arrive pas à supprimer la cause.
Pourriez-vous m'aider ?
Merci d'avance, cordialement.
Denis LO JACOMO

Ich komme nicht mehr auf mein altes E-Mail Konto, keine verbindung mit dem Server.

I was using Thunderbird Portable e-mail client from my external drive [1TB capacity] for years before the crash. I am not sure if your IT specialist can assit me to solve this [ see attached ] I have 300K+ e-mails in it but since 4/10/24 when i tried to open it , the crash pop-up appeared. Due to this, I have to keep aside my external drive [ if plugged into my PC will shows as Driive D: ] and reinstal a fresh Thunderbird mail client to my laptop under Drive C: Only new e-mails from 4/10/24 are visible and I still hoping the old e-mails from Drive D: can still be recovered . Thank you for listening to my issue and really hope oyu can help .