Mojave 10.14.4 fails to Authenticate Gmail account

This works for me !

Go to https://accounts.google.com/DisplayUnlockCaptcha to repair the access (documented on https://support.google.com/accounts/answer/2461835?hl=en)

after fixing add the account in the mac os settings or over the mail app as usually (you don't even need to delete it first if it's already added).

After verification in the opened safari window everything will go well.

After 2 long calls with Apple support (very good btw), we tried lots of different ways ranging from emptying cache, running scans, deleting bad software etc. Finally last night I reinstalled Mojave and now emails are working. It probably updated Mail version too so I'm on version 12.4 (3445.104.1). That might have done it, not sure. Keeping my fingers crossed that this solution lasts, the other 2 fixes so far have proven short-lived.

Look.. i've been able to get it to work 2 different ways. 1. Create a new user on your mac and set it up. Worked the first time. Then migrate your user data over to the new user. Worked. 2. log out of gmails website in safari... delete all saved passwords in Safari prefs. delete all accounts in system prefs. remove all folders/files from ~Library/Mail. Destroy any keychain entries for gmail or google. download Onyx and run. Then reboot and setup as new account. Worked.

I don't have the 10.4.5 update. it worked in 10.4.4

10.14.5 didn't fix my problem however, MacSavvyFlorida's 14 May post did. I followed his/her number one suggestion and established a new gmail account in Mac Mail that essentially took over my email service. I left the old account as is, with the little squiggly symbols. I have given my Mac Mail four days to work as advertised or play loop-di-loop. Today, the fourth day, all appears to be working like old times. I have sent myself a few test shots and they all worked as they should have. The account removal procedure offers the possibility to deactivate an account or delete it. I deactivated and all traces of the old account in Mac Mail are gone. In my System Preferences, Accounts, it continues to appear, deactivated. My thought is that if Apple comes up with the fix that is long overdue, I can always reactivate if necessary.

Ok, this is what worked for me.. once I added google under the Internet Account (System Preferences/Internet Account), the Google Account Mail should be in the list of accounts of MAIL, but is disable or fade out, all you have to do is selected and there will be an option to "Enable This Account"

but you must add the Internet Account, at least that is how it worked for me.

Thanks, hope that helps.

WDM

I called to Apple support. And got the answer like management knows about this issue. They're trying to fix this bug with Google together. Now I should use another mail clients on Mac and on iOS. Or use web version for e-mails.

That is official answer from Apple support.

You created an app specific password and using that for password? Keep 2 Step enabled.

the workaround doesn't mean you have to switch off two-step... just add email account using manual IMAP settings and use app specific password :-)

*macOS :-P

you don't have to to turn off two factor...

just enable app specific password and it will work :-)

Delete google key in keychan, autorize, profit!

Удалите ключи Гугла из Кейчейна, авторизуйтесь, все заработает, по крайней мере для меня сработало

What worked for me was to Quit Mail app. Open Safari, and go to Gmail.com then Log Out of the account, and Log back In. Then Quick Safari, and open Mail back up.

I deactivated my old account and added a new one. That worked and thanks for helping.

GAH FINALLY! Tried probably 50 different things - deleting all of Safari's references back to any of my gmail passwords finally let me authenticate it as an Internet Account. Hallelujah!

Just update Safari to 13.0.1 and restart you Mac - Finally, a fix. (I’m running 10.14.6 OS)

Worked flawlessly.

After installing 10.14.6, the problem was fixed for me.