Installing existing thunderbird on new computer after crash
Thunderbird setup will not accept credentials. I have confirmed my email and password work by accessing email through firefox. "Unable to log in at server. Probably wrong configuration, username, password" is the error message. Figuring out how to move addresses et al is an issue too. I have the original HDD in an exterior USB box.
Ausgewählte Lösung
AT&T accounts require that a secure mail key be used in TB instead of the att.net password, which will still work for webmail.
https://www.att.com/support/article/dsl-high-speed/KM1010523/
Remove the passwords from Saved Passwords in Options/Privacy & Security, restart TB, enter a key when asked for a password.
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Who is the mail provider, and what are your settings? Authentication might require something different than the password that works for webmail.
Ausgewählte Lösung
AT&T accounts require that a secure mail key be used in TB instead of the att.net password, which will still work for webmail.
https://www.att.com/support/article/dsl-high-speed/KM1010523/
Remove the passwords from Saved Passwords in Options/Privacy & Security, restart TB, enter a key when asked for a password.