Error Code 401 “missing required authentication credential”

  • Resolved pwizard

    (@pwizard)


    9 months, 2 weeks ago

    You asked me to create a new topic on the same unresolved issue that someone else is experiencing.

    I have to go back in and reset gmail setting and reauth then resend failed emails. Nothing to do with passwords as you suggested. Please refer to the same open support discussion.

    { “error”: { “code”: 401, “message”: “Request is missing required authentication credential. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.”, “errors”: [ { “message”: “Login Required.”, “domain”: “global”, “reason”: “required”, “location”: “Authorization”, “locationType”: “header” } ], “status”: “UNAUTHENTICATED”, “details”: [ { “@type”: “type.googleapis.com/google.rpc.ErrorInfo”, “reason”: “CREDENTIALS_MISSING”, “domain”: “googleapis.com”, “metadata”: { “service”: “gmail.googleapis.com”, “method”: “caribou.api.proto.MailboxService.SendMessage” } } ] } }

    • This topic was modified 9 months, 2 weeks ago by pwizard.
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  • Plugin Support M Aqib Khan

    (@aqibkhan9)

    9 months, 2 weeks ago

    Hello @pwizard ,

    We hope this message finds you well.

    Thank you for reaching out to our Support team.

    The error message you’re encountering, a 401 Unauthorized error from the Gmail API, indicates that the request is missing a valid Client ID and Client Secret (OAuth 2.0 access token). This typically occurs when OAuth authorization is disrupted.

    If you recently changed your Gmail account password, please note that this action revokes all existing OAuth permissions granted to connected apps. As a result, any applications (including Post SMTP) that were previously authorized will be disconnected. You’ll need to reconnect Post SMTP by authorizing it again using the same email account through the Post SMTP setup wizard.

    You may follow our detailed documentation to complete this reauthorization process.

    However, if you’re confident the issue isn’t related to a password change, we may need to explore other potential causes, such as:

    • A conflict with another plugin or theme
    • Browser or site-level caching
    • Expired or incorrect Google Cloud credentials

    Please let us know how you’d like to proceed. We’re here to assist you every step of the way.

    Warm regards,
    Support Team – WP Experts

Viewing 1 replies (of 1 total)

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