Mojave 10.14.4 fails to Authenticate Gmail account

I tried ALL THE THINGS, and no work-around has helped. I had resorted to just using Gmail and Google Calendar within Safari until Catalina came out, but when I looked up the projected release date, I found out that a public beta is available for download! I upgraded, and IT WORKS. My life can go on now. Here are the instructions I followed: https://www.techradar.com/how-to/how-to-download-and-install-macos-1015-catalina-beta-right-now

Looked simple, appeared to authenticate fine, but still did not re-activate the account on the MacOS mail client (or calendar)

I’ve recently upgraded to 10.14.6, and the trouble started after a password change. Internet Accounts popped up the usual box saying that it needs to open Safari to complete setup, but safari either fails to open altogether, or, if Safari has been closed and quit, it reopens to the starting (Favorites) page, with no URL - IE the redirect for the google sign-in is missing.

Turning off or on popup blocker, and restarting the Mac don’t help. Also, Apple is a jealous god - you can change the default browser, but it still insists on using Safari for adding Internet, mail, or calendar accounts.

iOS mail and calendar, on the other hand simple prompted for a password update, and carried on working.

My conclusion has to be that Apple made it worse, and that’s even taking the charitable view that they care about the problem. Sigh.

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.

I’m very surprised that re-installing Mojave 10.14.6 problem with Gmail was not resolved !

you might have to clear caches too and restart your computer .

Somebody is suggesting to clean chainkey, I wouldn’t recommend !

I’m pretty confidence that problem is related to Mojave 10.14.4 and after maybe some damaged files .

anyway, I had phone a phone conversation with Apple care , they collected information from my computer , either the evaluated or share it with google eng. and the result was to either reinstall Mojave or upgrade it .

My problem was that I had problem with my Gmail and to delete it from my iMac , after that I was not to set it.

when I was clicking on Google logo to add my e-mail and Password as usual and an icon used to pop up asking to « open safari « 

by clicking on « open safari » it was not going anywhere , if Mojave was installed correctly and safari / google would have opened asking to log in and then a new pop up screen asking you to allow Mac to access your gmail account and that is it !

"by clicking on « open safari » it was not going anywhere , if Mojave was installed correctly and safari / google would have opened asking to log in and then a new pop up screen asking you to allow Mac to access your gmail account and that is it !"

That's exactly the problem, but I don't think it has anything to do with "installed properly."

According to this thread, variations of not authenticating Google Internet Accounts has been a problem since 10.14.4, but it finally bit me on a password change shortly after an upgrade to 10.14.6 and the latest Safari.

You can tell it's specific to Apple's Internet Accounts authenticating to Google, because other apps using Google SSO (to the same corporate account), such as Zoom and Slack, redirect to Safari, open a Google authentication page, and log in successfully.

On the other hand, the redirection from Mail, Calendar, Internet Accounts... either don't open Safari, or if it is closed and quit, will open a start page with no URL - IE the redirection is failing.

Out corporate IT staff tried upgrading another Mac to 10.14.6 and found they could not add/update Internet Accounts, either.

Apple acknowledged to out IT that they know of the problem and are working on it - yeah, right - only 5 months!

Appreciate the speed with which I got news about Safari 13.0.1 via this forum.

Search for updates, install, restart, and no I can add/update my corporate google mail/calendar accounts via "Internet Accounts" as it should be.

Thanks, folks

PS Apple must have made this 6 month old problem much worse in 10.14.6 to get enough blowback that they had to fix it!

Hey everyone. After deleting the gmail account, try shutting down your computer completely and then restarting in safe mode (power on and hold shift button until the bar underneath the apple fully loads). Add the account in Apple mail. You should be able to open in Safari at this point. After adding the account back, you should restart your computer. Mine worked! Thanks to Trevor at Apple Support!

IOS iphone 12.4.2

I was able to verify a new gmail account on the iOS using the following server settings:

Host (incoming) imap.googlemail.com

SMTP - smtp.googlemail.com

ipad IOS 13.1.3 - I was able to verify a new gmail account using the same settings.

Note - my email address contained a period.

So I've been having the same issue, in that one gmail account was not working on MacBook (same account worked fine on other mac desktops). I had to delete the account from Apple Mail, and then we had to delete the passwords in a few applications in my keychain (keychain access).

Once we did that, Apple Mail allowed me to re-install the gmail account without any issues. Good luck to everyone out there. If you call Apple, mention the keychain thing. They can guide you through the process.

What worked for me was going into Keychain Access program and deleting all the authorization tokens from Google and gmail. Do a search on the top right for "gmail" and then remove all the tokens and even the account passwords.

After that I did one more cycle on Internet Accounts and everything started working again.

For me the issue cropped up as I had to restore a backup and that included older items in the keychain Library folder, that came from my old computer.

I have exactly the same problem with Mojave 10.14.6 I cannot find how to resolve it. i have deleted the account, rebooted and tried again. Changes google passwords etc. Gmail direct works, as does my iPad and iPhone. Any idea anyone please?

Thank you, it works!

I was getting tired with Google blocking my Mail app anytime I was using it in a new location.

One small thing: you actually have to be logged in to your account in Safari, when you go to this link.

Then, right after you approve the new connection, open your Mail app and, voila, it works!

Same here, something in 10.14.4 causes this. Rebooting doesn't fix it.

I have tried removing and re adding but it has not fixed the issue. Also, I left the account that first had the issue removed and now another one of my gmail accounts has the issue.

We are getting the prompts, and going through the process, but the authentication silently fails every time.