Can't connect Gmail to Macmail (Sonoma 14.2.1 on M3 MacBook Pro)

Question

Level 1

25 points

Can't connect Gmail to Macmail (Sonoma 14.2.1 on M3 MacBook Pro)

I have two Gmail accounts that appear to have identical configurations. One is added with no problems to Macmail but the other keeps failing. Both accounts work fine in a browser and on iOS phones. Have tried each alone without the other account.

Mail >

Accounts >>

Add account...>>

Google >> (Google requires authentication in web browser) >>

Open Browser >> (This opens Safari and Sign in with Google) >>

I sign in with no issues on either account. But one Gmail account goes directly to populating the email. The other comes back with a "Continue to sign in request" in Safari, where clicking to continue or cancel brings a 400 error.

I have examined both Google mail accounts and cannot find any consequential difference between them.

Thank you for any advice you can provide!

MacBook Pro 14″, macOS 14.2

Posted on Dec 21, 2023 9:44 PM

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Answer 1

Top-ranking reply

bosmacs

Level 1

8 points

Jan 5, 2024 4:34 AM in response to ornlgeorge

The issue appears to be Safari's "advanced tracking and fingerprinting protection". Go to Safari's Settings -> Advanced and uncheck "Use advanced tracking and fingerprinting protection".

After this I was able to re-authenticate my Google account without the 400 Bad Request error. Once the account is reconnected, you can enable the option again.

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Answer 2

drjzimm

Level 1

8 points

Feb 6, 2024 6:07 AM in response to ornlgeorge

Help! I have the same issue, since Dec 2013. But, the solution that appears to have worked for everyone in the above posts, has one problem...There is no, "Settings -Advanced," on my MAC, or on my Safari browser. Where do I go to find the elusive box to uncheck, "Used advanced tracking and fingerprinting protection?"

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Answer 3

Jan 30, 2024 7:12 AM in response to bosmacs

bosmacs, this solution enabled me to add two different gmail accounts to two different Apple computers that previously gave the 400 error. Thanks a lot for posting this! How did you ever figure this out?

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Answer 4

Feb 8, 2024 6:26 AM in response to ornlgeorge

Doesn’t work for me !

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Answer 5

ornlgeorge Author

Level 1

25 points

Jan 2, 2024 11:28 AM in response to TheSuperTrain

It is a regular Gmail account. I have two such regular accounts and only one of them is having this issue.

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Answer 6

ornlgeorge Author

Level 1

25 points

Dec 22, 2023 7:16 AM in response to ornlgeorge

More information: I have also tried authentication with a passkey, a password with 2-factor iOS device, a passkey via iOS device, all delivering the same result of seemingly logging in correctly but then the "Continue to sign in" request and finally a 400 error.

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Answer 7

storico

Level 1

18 points

Jan 30, 2024 10:26 AM in response to bosmacs

I had this problem too, a 400 error code after I changed my Google password, kept me from using Apple Mail on a Macbook. But this solution worked immediately! Thank you!

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Answer 8

Jan 22, 2024 6:39 AM in response to bosmacs

This worked for me.

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Answer 9

Feb 1, 2024 7:09 PM in response to ornlgeorge

I had the same issue. I have multiple gmail accounts but one of them stopped syncing with my apple mail on my iMac and MacBook. Was OK on my IOS devices. Spoke with Apple support and was fixed in a few minutes. This is their fix.

Hi *********, further to our call please see the following information that could be of help to you. Safari Settings>Privacy and uncheck ‘Prevent cross-site tracking and Hide IP address from tracker. System Settings>Desktop and Dock and set the default browser to Google Chrome. Put Safari settings back and made safari the default browser again.

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Answer 10

ornlgeorge Author

Level 1

25 points

Jan 9, 2024 4:25 PM in response to bosmacs

Thank you! This worked for me.

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Answer 11

Jan 2, 2024 7:52 AM in response to ornlgeorge

I am experiencing this too. Are you by chance also trying to log in to a "non-gmail" branded account (e.g. business or education)?

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Answer 12

mef4ds

Level 1

12 points

Jan 19, 2024 8:40 PM in response to bosmacs

Worked for me!

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Answer 13

Jan 26, 2024 4:02 PM in response to bosmacs

WOW ! ! Thank you, THANK YOU!! This worked ! !

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Answer 14

drjzimm

Level 1

8 points

Feb 7, 2024 9:48 AM in response to jdbartram

jabartram, Sorry, I meant to say that I've had this problem since Dec. 2023. Also, you are correct. This MAC desktop is a late 2012 model, and Apple stopped offering an OS upgrade since High Sierra v10.13. Maybe, because of this, there is no solution apart from a major hardware upgrade!

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Answer 15

iCaad

Level 1

11 points

Feb 9, 2024 10:56 PM in response to ornlgeorge

I have an Intel MAC book pro running Ventura 13.6.4.

Same problem I updated by google password and could not log into gmail, no such problem on IOS. Got the 400 error, device retired. This worked for me

1) I changed my default browser to chrome.

2) Went to "Internet Accounts" under system settings

3) Select add account "Google"

4) Validate on Google App on iPhone for two step validation

Google seems to see Safari as an unsupported device for account validation.

This worked, and is ridiculous. Try to keep account secure and change password and you are faced with this problem.

Change back to safari after as default browser after you fixed this

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