K-9 Mail suddenly stopped to work.
My K-9 in Android suddenly stopped to work a couple of days ago. The server asks for autentification. I haven't changed anything. I've uninstalled and reistalled the app and restarted my phone a Samsung S22 ultra several times. The app is recognating some settings automatically but it doesn't accept my old password with 16 letters in a group of four with highfens in between. What shall I do, please? Something wrong with the server? The version of the app is 17.0 updated March 16th 2026.
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Is the password your normal email account password or an "App password"? You say your old password is not accepted. Does this imply you've changed the password to a new one?
Have you confirmed the password is valid by using it to log into your webmail? If it's an app password, have you tried generating a new one.
Are the hyphen's meant to be part of the password, or there to make it easier to read. Did you try entering without the hyphen's.
If your using an imap connection, have you considered using oAuth 2.0 authentication?
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Valgt løsning
Is the password your normal email account password or an "App password"? You say your old password is not accepted. Does this imply you've changed the password to a new one?
Have you confirmed the password is valid by using it to log into your webmail? If it's an app password, have you tried generating a new one.
Are the hyphen's meant to be part of the password, or there to make it easier to read. Did you try entering without the hyphen's.
If your using an imap connection, have you considered using oAuth 2.0 authentication?
Problem solved. I'd changed my password for iCloud and I had to create a new app password. That made my K-9 work again. Didn't know about the app password.
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