More information may help. did you copy the profile from one PC to another? is the email account one that uses 'app' passwords? what is the domain of the email account? with that, someone here may have suggestions.

Jeg oprettede med min mail adresse og imap , senere forsøgte jeg at kopiere opsætningen ingen af disse lykkedes. bnissen.dk er min domæne og opsat på samme måde som den første pc Bruger ikke app kode kun den kode der bruges til mailudbyderen. Håber det kan hjælpe til bedre forståelse :-)

Thank you. Posting a screenshot of incoming server settings may help. You can clear any password in thunderbird by this: - settings>privacy&security - click saved passwords and then show passwords - then, highlight the rows for that account and delete them

Those steps will remove whatever password is there for a fresh attempt to retrieve messages.

Okay prøver med billede af indgående.

Prøver jeg igen at oprette for jeg en besked om at indgående server er oprettet. Det var efter hvor jeg trykkede fortsæt

Everything looks right to me. Suggestion: log in online and see if the password works there.

Online ?? mener du åbne Thunderbird?

Takker for hjælpen

My suggestion was because logging on line to your email host site is usually the best way to confirm a password. Is your problem now resolved? I was glad to assist, although I am not sure your issue was resolved.