gmail access blocked Authorization error

Mike Hensler 0 Reputation points
2026-07-25T00:28:39.7466667+00:00

access to gmail through Outlook is blocked, Authorization error (error 400)

How do I reconcile this?

Outlook | Windows | New Outlook for Windows | For home
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  1. Manoel Barros 20,550 Reputation points Independent Advisor
    2026-07-25T01:45:40.6566667+00:00

    Hi!

    This error occurs because Gmail has blocked logins via Outlook.

    Is this the first time you are trying to log in to Outlook with this Gmail account? Or were you using it previously?

    Have you tried using App Passwords instead of your regular Gmail password?

    Have you tried creating a new password and logging in?

    Is your Gmail account linked to Windows? Open Windows Settings > Accounts > Your info.

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