Unable to send emails from Outlook.com connected accounts from Outlook app

Last Updated: March 1, 2019

ISSUE

This error may occur when you try to send email using an Outlook.com Connected Account:

  • "This message could not be sent. You do not have the permission to send the message on behalf of the specified user.”

STATUS: WORKAROUND

The Outlook Team is investigating a fix.  As a workaround, add the Connected Account as an Outlook.com secondary Alias. To do this:

  1. Go to this page https:⁠//account.live.com/names/Manage.
  2. Under Account Aliases, click Add Email.
  3. Under Add an alias, click the radio button for Add an existing email address as a Microsoft account alias.
  4. Click the button Add Alias.

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See Also

Fixes or workarounds for recent issues in Outlook for PC