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

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More
Solved Arquivado

I have Thunderbird on two computers. Both can receive emails but not send. Both ask me to resend my outlook password which I do but it tells me authentiacation failed. Any ideas?

christinerothwell

I have Thunderbird on 2 computers and both can receive emails but not send them. One is brand new. When I send an email I am asked for my password for my outlook account but when I send it I get the message that authentication did not occur. Any ideas?

I have Thunderbird on 2 computers and both can receive emails but not send them. One is brand new. When I send an email I am asked for my password for my outlook account but when I send it I get the message that authentication did not occur. Any ideas?

All Replies (2)

what is showing as settings in outgoing server (SMTP) in your account settings? I Would hazard a guess the server name or authentication method is incorrect.

Chosen Solution