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Probelms to connect to Gmail SMTP server anymore

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Since the new Version of Thunderbird suddenly email send out did stop working. Firewall and Anti-Virus have been disabled. That did not help. Error: Senden der Nachricht fehlgeschlagen. Auf Grund des unerwarteten Fehlers 80004005 fehlgeschlagen. Keine Beschreibung verfügbar. Die Nachricht konnte aus unbekannten Gründen nicht über den SMTP-Server smtp.gmail.com gesendet werden. Bitte kontrollieren Sie die SMTP-Server-Einstellungen und versuchen Sie es nochmals.

Since the new Version of Thunderbird suddenly email send out did stop working. Firewall and Anti-Virus have been disabled. That did not help. Error: Senden der Nachricht fehlgeschlagen. Auf Grund des unerwarteten Fehlers 80004005 fehlgeschlagen. Keine Beschreibung verfügbar. Die Nachricht konnte aus unbekannten Gründen nicht über den SMTP-Server smtp.gmail.com gesendet werden. Bitte kontrollieren Sie die SMTP-Server-Einstellungen und versuchen Sie es nochmals.

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ingo11 said

Since the new Version of Thunderbird suddenly email send out did stop working. Firewall and Anti-Virus have been disabled. That did not help. Error: Failed to send the message. Failed due to unexpected error 80004005. No description available. The message could not be sent via the SMTP server smtp.gmail.com for unknown reasons. Please check the SMTP server settings and try again.

What are the settings? They should be: smtp.gmail.com on 587, STARTTLS, (or 465 SSL/TLS), OAuth2 authentication, User Name = email address.