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

Work anywhere from any device with Microsoft 365

Upgrade to Microsoft 365 to work anywhere with the latest features and updates.

Upgrade now

Last Updated: March 1, 2019


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.”


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.

More Resources

Icon Experts (brain, gears)

Ask the experts

Connect with experts, discuss the latest Outlook news and best practices, and read our blog.

Outlook Tech Community

Icon Community

Get help in the community

Ask a question and find solutions from Support Agents, MVPs, Engineers, and Outlook users.

Outlook Forum on Answers

Icon feature request (light bulb, idea)

Suggest a new feature

We love reading your suggestions and feedback! Share your thoughts. We're listening.

Outlook UserVoice

See Also

Fixes or workarounds for recent issues in Outlook for PC

Need more help?

Get support
Contact us
Expand your Office skills
Explore training

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.