This issue is a bug and the Outlook Team is investigating a fix. Please use the workarounds in this article, https://support.microsoft.com/en-us/office/classic-outlook-error-when-sending-from-outlook-com-you-do-not-have-permission-to-send-on-behalf-of-the-specified-user-0x80070005-0x0004dc-0x000524-49f5afe9-11ee-4ce1-9531-296670171509.
Outlook Problem
Al Olsen
60
Reputation points
I am getting undeliverable sending emails to multiple addresses. I sent the emails in question many times in past with no problems. I am using Microsoft Office Professional Plus 2024, Outlook.
Error: You do not have the permission to send the message on behalf of the specified user.
I test by sending an email to my other email addresses
Same problem
I have sent emails many times in the past
Outlook | Windows | Classic Outlook for Windows | For home
1 answer
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Gabe Bratton 691 Reputation points Microsoft Employee Moderator
2026-03-31T14:48:21.3966667+00:00