Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Sending of the message failed. The Outgoing server (SMTP) smtp.gmail.com does not support the selected authentication method. Please change the 'Authentication method' in Account Settings | Outgoing Server (SMTP)'

Thunderbird Probleemoplossing
Casteele Bartholomew beantwoord
Casteele Bartholomew
Casteele Bartholomew

I keep trying to configure ThunderBird for gmail. receiving email works fine, but not sending. i always get this message: Send Message Error Sending of the message failed. The Outgoing server (SMTP) smtp.gmail.com does not support the selected authentication method. Please change the 'Authentication method' in Account Settings | Outgoing Server (SMTP)' Please help!

I keep trying to configure ThunderBird for gmail. receiving email works fine, but not sending. i always get this message: Send Message Error Sending of the message failed. The Outgoing server (SMTP) smtp.gmail.com does not support the selected authentication method. Please change the 'Authentication method' in Account Settings | Outgoing Server (SMTP)' Please help!

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Casteele Bartholomew
Casteele Bartholomew Vraageigenaar

I do note: if I use port 465 (TLS/SSL), ThungerBird hangs/fails to connect. If I use port 587 (StartTLS) I get the above error almost immediately.