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Apple Mail won't add a gmail address

When trying to add a gmail address to my MacBook Air I get this message:

Authorization Error

Error 400: invalid_request


You can't sign in to this app because it doesn't comply with Google's OAuth 2.0 policy for keeping apps secure.


You can let the app developer know that this app doesn't comply with one or more Google validation rules.


MacBook Air 13″, macOS 10.13

Posted on Apr 21, 2023 12:30 PM

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Question marked as Top-ranking reply

Posted on Feb 1, 2024 9:46 PM

2024-02-02

MacOS 14.1 Sonoma


1) Safari > Settings > Privacy Tab > Advanced Settings > Uncheck all the checked boxes under "Privacy:"

2) Go back to mail app and add accounts normally.

3) Go back to step one but re-check the boxes that were unchecked.


The settings on 1) is only messing with logging in. But once authenticated, mail updates fine after safeguards are turned back on.

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Feb 1, 2024 9:46 PM in response to Maggiellv

2024-02-02

MacOS 14.1 Sonoma


1) Safari > Settings > Privacy Tab > Advanced Settings > Uncheck all the checked boxes under "Privacy:"

2) Go back to mail app and add accounts normally.

3) Go back to step one but re-check the boxes that were unchecked.


The settings on 1) is only messing with logging in. But once authenticated, mail updates fine after safeguards are turned back on.

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Sep 10, 2023 4:00 PM in response to Maggiellv

I couldn't add my gmail account to mail. NOW SOLVED.

Days of trying. Then this...

Go to Preferences and set your default browser to Safari.

Open Safari and make sure you are not logged into your Google account.

Go back to System Preference>Internet Accounts and add your Google Account.

The confirmation will open your default Browser Safari. Log into Your Google Account.

All done.

So easy when you rely on Apple and not Google.

OSX 10.15.7

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Jan 29, 2024 8:26 PM in response to Maggiellv

I followed the steps in the video and it still didn't work for me. I found a work around


Work Around:

  • Change default browser to Chrome (haven't tried other browsers but this one worked)
  • Re-attempt to add your gmail account


** My issues was that MAC would try to authenticate through a private window. Couldn't figure out how to stop settings from defaulting to a "safari private browser." So the easiest thing to do was try changing the browser


MacOS 14.2.1

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Apr 21, 2023 1:44 PM in response to Maggiellv

Mac's Mail App is not as modern as iOS's Mail app, Many eMail providers now require a separate App Password different from your eMail password…


It just needs an App Password separate from the gMail password…

https://support.google.com/mail/answer/185833?hl=en-GB

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Sep 23, 2023 7:34 AM in response to BDAqua

This is no solution. Why is it not working with google and Apple using the simple email function?


Really do not understand this…


added lots of folders to archive all of my Gmail in the email functionality of my iMac but am not able to use it anymore…


terrible


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Mar 23, 2024 8:38 PM in response to Maggiellv

I was able to figure this out. For me, it was an issue with safari blocking pop ups. If you go to safari settings and allow pop ups for the google website (specifically the google account one) and you try again you will be able to add the gmail to your internet accounts.


I hope this helps!

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Jul 7, 2024 9:59 PM in response to Maggiellv

I cannot add mail accounts I am signed in toMac Mail on my MacBook Air. No problem on other linked devices. I set up zoom.us he other day and then was told that this was an invalid request error 400. Contact the developer, it said. That is surely joke. How do I know who the developers of zoom.us is, ho can i possibly contact them from Japan, and what do YOU think would happen as a result? I want my functioning mail back; been through all the steps to set up accounts, now they exist but I can't add to Mail on this one device.


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Jan 9, 2024 9:47 AM in response to Alto sax

Cant create re add Mail

James Walker1 User level:Level 1 (129 points)


Mar 1, 2019 10:39 AM in response to if240

I was having this problem trying to add a mail (not gmail) account just for Notes. In my ~/Library/Keychains folder, I found a subfolder with a long hexadecimal and hyphens name. I deleted that subfolder, logged out, and logged back in. I was then able to add the account, without having lost any passwords from my keychains.

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Apple Mail won't add a gmail address

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