Gmail Account Blocked from Adding to Apple Mail (Other Gmail Accounts Work)

Hi all, I’m having trouble adding one Gmail account to Apple Mail — even though my other Gmail accounts are working fine in the app. This issue started after I updated passwords across accounts in response to the global security breaches reported in mid-June.


Here’s the situation:

  • macOS Sequoia 15.5
  • Apple Mail version 16
  • Gmail account is personal (not Workspace)
  • 2-Step Verification is deactivated
  • Security Key was created using Apple Passwords
  • Google continues to show a “Sign-in attempt was blocked” message when I try to add the account in Mail.
  • I've confirmed the correct credentials - it's not the issue.


Any suggestions on how to get this one Gmail account working in Apple Mail again?

Thanks in advance!

MacBook Pro 13″, macOS 15.5

Posted on Jun 25, 2025 3:36 PM

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Gmail Account Blocked from Adding to Apple Mail (Other Gmail Accounts Work)

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