Title: UnAuthorized
Last modified: September 22, 2026

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# UnAuthorized

 *  Resolved [Mahek Kalola](https://wordpress.org/support/users/mahekkalola/)
 * (@mahekkalola)
 * [1 week, 3 days ago](https://wordpress.org/support/topic/unauthorided/)
 * Email has stopped working and authoriztion is correct still it is giving constant
   error. of unauthoried for Microsoft / Azure SMTP.
    -  This topic was modified 1 week, 3 days ago by [Mahek Kalola](https://wordpress.org/support/users/mahekkalola/).
    -  This topic was modified 1 week, 3 days ago by [Mahek Kalola](https://wordpress.org/support/users/mahekkalola/).

Viewing 1 replies (of 1 total)

 *  Plugin Support [Ariful Islam](https://wordpress.org/support/users/arifulislam1/)
 * (@arifulislam1)
 * [1 week, 2 days ago](https://wordpress.org/support/topic/unauthorided/#post-19027462)
 * Hi [@mahekkalola](https://wordpress.org/support/users/mahekkalola/) ,
 * FluentSMTP uses Microsoft Graph for the Outlook/Azure connection, so an “Unauthorized”
   error after successful authorization usually indicates an expired/revoked token,
   expired client secret, sender mismatch, or a Microsoft 365 mailbox/security restriction.
 * Please try the following:
    1. Update FluentSMTP to the latest version.
    2. In Entra/Azure, confirm the client secret has not expired and that you copied
       the Secret Value, not the Secret ID.
    3. Confirm the app has delegated Mail.Send permission and admin consent has been
       granted if required by your tenant.
    4. Make sure the authenticated Microsoft account exactly matches the From Email
       in FluentSMTP. For a shared mailbox or alias, the account also needs Send As
       or Send on Behalf permission.
    5. Re-authenticate the connection in FluentSMTP and save a new access code.
 * If the issue continues, please send us the exact error message from FluentSMTP
   → Email Logs, along with your FluentSMTP version and whether the sender is a 
   regular or shared mailbox. Please do not share your client secret, access token,
   or password. Also check the Microsoft Entra sign-in and Conditional Access logs
   at the time of the failed test, as tenant policies can revoke or block token 
   renewal.
 * Thank you.

Viewing 1 replies (of 1 total)

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 * 1 reply
 * 2 participants
 * Last reply from: [Ariful Islam](https://wordpress.org/support/users/arifulislam1/)
 * Last activity: [1 week, 2 days ago](https://wordpress.org/support/topic/unauthorided/#post-19027462)
 * Status: resolved