MacOS – Failed to authenticate with Google, please try again later

calendargmailmacosmail.app

macOS Big Sur 11.2.1
Cant add any account to Mail, Calendar, etc..
For example, when I try add gmail account to my Mail and follow all steps:

Same time when I log in with this account to google in browser, I see in this google account access for 3rd party untrusted applications is enabled:

It is not needed, google already gives access to my MacBook Pro macOS without this setting. But I found lot "solutions" in Internet to set this security settings to On. This is not help in my case.

How to fix this bug which goes with macOS looks like couple of years?

Best Answer

This is not a bug of macOS. It was bug or troubles in some google network services like oauth2 with urls: https://accounts.google.com/o/oauth2/v2/auth/identifier...

Solution is to use VPN with any remote GEO location.

Related Solutions

Using Gmail with Mail, Google Calendar with iCal

Keyboard shortcuts: Mail has it's own keyboard shortcuts, which you may have to learn.

Alternate email addresses/multiple accounts: works fine. Don't know about plus-addresses.

Priority inbox: this is not supported. Labels work, as does flagging. Public calendars work in iCal.

Syncing is very easy to set up - via IMAP in Mail, and in Preferences in iCal. In Lion it's even simpler.

Yes, you add each account separately in mail. You can still visit them in any browser or device.

IOS – Adding a Google account for calendar purposes on iOS 8.3

Have you tried the following on your iOS device:

Add Account > Other > Add CalDAV Calendar

Then enter your credentials:

Server: google.com
Username: Enter the email address of the associated Google account.
Password: Enter the password that is associated with the Google account from above.
Description: Purely for information. Enter a description of the account.

This should work when only using the Calendar on a Google Account.

Best Answer

Related Solutions

Using Gmail with Mail, Google Calendar with iCal

IOS – Adding a Google account for calendar purposes on iOS 8.3

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