Apple Event: May 7th at 7 am PT
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
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.
This worked for me too after trying the other methods mentioned above.
this worked for me - thanks!
this worked for me! thank you
THANK YOU THANK YOU!!!!! You answered 3 weeks of me trying everything. I don't know what happened when the newest Mac update came out but it has a glitch for this PRIVATE WINDOW thing.
Thank you for this! It worked. I've been trying intermittently for the last week to fix this issue of "Error 400"
Changing browser to chrome solved my problem. thank you
I had to change my default browser from Safari to chrome to be able to add my gmail.
Changing the default browser to Chrome - THIS WORKED! I wasted days trouble shooting, adjusting settings, deleting and trying to my gail accounts back up and running, and all I had to do the whole time was change the default browser to chrome in order to get it working again. Maddening... but I'm grateful for this post!
It's possible that somewhere in your network stack the request is being blocked. Depending on the specifics of your configuration, one workaround might be to connect temporarily to another network (such as a WiFi hotspot if your phone provides one) and try again. You can switch back to your regular network once the account has been set up.
Some people have had success using ThunderBird for eMail, others have given up & just useWebMail at gmail.com
Oh, I agree it's a pain, but Security is an ever changing target & Mail.App being tied to the MacOS version is not going to be updated.:(
👍
Finally, this worked! I am so happy!
thank you
This worked for me! Thanks so much!! Been trying for months to solve this!!
I just switched back my default browser but now know to switch it when I need to add an email account!
Apple Mail won't add a gmail address
