Outlook 550 authentication required error - what to do?

If you get the error message "Outlook 550 authentication required" in Outlook, we will use the example of Outlook 2010 to show you how to fix the error.

Fix "Outlook 550 authentication required" error in account settings

The error message indicates that there is an authentication problem on the outgoing server.

1. Click on "File" at the top of the menu bar and then on "Information".
2. Go to "Account Settings" and again in the submenu to "Account Settings".
3. Double-click your email address, then click "More Settings".
4. There you select "Outgoing server".
5. Activate the option "The outgoing server (SMTP) requires authentication" and "Use the same settings as for incoming mail server".
6. Confirm everything with "OK".
7. Note: In principle, you can also use this guide for older versions of Office. The menu navigation may be slightly different.

This practical tip shows you how to add a new account in Outlook.