Unable to Authorize Microsoft/Office365 account may occur when an account has an issue with the connected mailbox.
Users may be trying to connect an account without a connected mailbox. This may occur because of a missing email address.
- Visit the Graph Explorer webpage.
- Log in with the user credentials.
- Get the profile details by clicking on the `Get my profile` tab.
- Confirm a value exists for
Nylas only supports accounts without a mailbox using Virtual Calendars.