How do I view the new mailbox editor in the .NET client?
Email, Mailboxes, Office365, 20C and above
There is an extra step for viewing the OAuth enabled mailboxes editor in the .NET client after it has been enabled in a navigation set. In the Browser UI (BUI) client the new mailbox editor is the only one available.
You must create and enable a custom configuration to view the new editor in .NET.
After you create the configuration you must set it to Yes (enabled) if you did not chose that as default.
Note that if you are logged out of the .NET client you may need to log into the new mailbox editor which is technically using a BUI session. This is expected and cannot be prevented.
Note that when searching for configurations you must choose Site under the Configuration Base drop down.
For information on enabling OAuth for Office365 mailboxes please refer to the documentation at https://documentation.custhelp.com/euf/assets/devdocs/buiadmin/topicrefs/t_configure_oauth_authentication_settings.html