When attempting to view Exchange Online properties in the Active Roles Web Interface, the following error message is displayed:
Unable to retrieve Exchange Online Mailbox properties. The possible reasons may be:
- The current user does not have the Exchange Online License.
- Modern Authentication is not enabled for the tenant.
- Exchange Online PowerShell v2/v3 module is not installed.
This error is showing for all users.
The users are licensed.
Modern Authentication is enabled for the tenant.
The necessary Exchange Online PowerShell module is installed.