K-9 stopped working with gmail April 2020

Larry Colen

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Apr 28, 2020, 4:42:49 PM4/28/20

to K-9 Mail

In the past couple of days, K-9 stopped talking to gmail on all 3 of my androids. I get invalid credentials errors, although I can log into the website using the same password.

Did something just change with gmail?

The message is
Username or password incorrect.

(Command: *sensitive*; response: #3[NO, [AUTHENTICATIONFAILED]. Invalid credentials (Failure)])

Kevin Fleischer

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Apr 28, 2020, 4:52:22 PM4/28/20

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Confirmed. I have exactly the same problem. All other mail accounts are still working. Login into browser gmail is also possible.

My phone is: OnePlus 6, Running Oxygen 10.3.2 (Android 10)

Larry Colen

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Apr 28, 2020, 4:53:35 PM4/28/20

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I just dug a bit deeper into my google account, and it seems that "allow less secure apps" was turned off. I don't know if this is something new, I wasn't given any warning, other than things broke.

Message has been deleted

Kevin Fleischer

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Apr 29, 2020, 1:34:32 AM4/29/20

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That helped me. I had to set up a App-Password (see: https://support.google.com/accounts/answer/185833 ) for K9 as I enabled two factor authentication.
This password is than used instead of the normal Google Password.

Solved it for me.

F van Limpt

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May 2, 2020, 7:42:08 AM5/2/20

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After having activated (Google) 2 step- verification I typed the new password in the incoming mail & outgoing mail settings.
However –incoming mail works fine, but outgoing mail 'cannot connect to SMTP server.'
I'd be grateful for help!

Gunter Königsmann

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May 3, 2020, 9:30:20 AM5/3/20

to F van Limpt, K-9 Mail

Gmail.com offers to generate app-specific passwords for you. These work with k9 mail.

Kind regards,

Gunter.

--
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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