Hi there,

Here my configuration :

PC with window 11

Outlook new version (works well)

Office365 account (professional one)

Thunderbird : version 128.2.0esr (64-bit)

Plus the add-on OWL

Everything works well except the possibility to send email thru thunderbird.

If I try to send an e-mail, here what I get :

” Login to server outlook.office365.com with username email address removed for privacy reasons failed.”

Weird !!!!!

SMTP configuration :

Server name : outlook.office365.com

Port : 587

User Name : email address removed for privacy reasons

Authentication method : OAuth2

Connection Security : STARTTLS

Thank you for your assistance on that matter.

Alex

​Hi there, Here my configuration :PC with window 11Outlook new version (works well)Office365 account (professional one)Thunderbird : version 128.2.0esr (64-bit)Plus the add-on OWL Everything works well except the possibility to send email thru thunderbird. If I try to send an e-mail, here what I get :” Login to server outlook.office365.com with username email address removed for privacy reasons failed.” Weird !!!!! SMTP configuration :Server name : outlook.office365.comPort : 587User Name : email address removed for privacy reasonsAuthentication method : OAuth2Connection Security : STARTTLS Thank you for your assistance on that matter.Alex  Read More

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