Veeam Backup for Microsoft 365 Feature Deprecation

In Veeam Backup for Microsoft 365 version 8, the following product features became deprecated:

Modern authentication method with legacy protocols allowed.

Since Microsoft deprecated basic authentication and legacy authentication protocols, Veeam Backup for Microsoft 365 does not support adding new Microsoft 365 organizations using modern authentication method with legacy protocols allowed. However, you can continue to use Veeam Backup for Microsoft 365 to back up and restore data of Microsoft 365 organizations that were added to previous installations of the product using this authentication method. For more information, see Permissions for Modern Authentication and Legacy Protocols.

Using multiple auxiliary backup applications.

Starting from Veeam Backup for Microsoft 365 version 8.4, adding existing applications to the backup configuration or creating new applications in your Microsoft Entra ID is not supported. Those auxiliary backup applications that have already been added to Veeam Backup for Microsoft 365, are kept running. You can remove them if needed. For more information, see Backup Applications.

In future versions of Veeam Backup for Microsoft 365, the following product features will be deprecated:

Basic authentication method. In Veeam Backup for Microsoft 365 version 8, adding Microsoft 365 organizations using basic authentication method is only available in Microsoft Entra China region through REST API and PowerShell.
Auxiliary backup accounts. For more information, see Backup Accounts.

Support for Microsoft 365 organizations located in Microsoft Entra Germany region. In Veeam Backup for Microsoft 365 version 8, you can add organizations located in Microsoft Entra Germany region only through REST API and PowerShell. For more information, see Limitations for Microsoft Entra Germany region.
SMB shares. For more information, see Network Attached Storage (SMB Shares).
On-premises Microsoft Exchange and Microsoft SharePoint organizations. For more information, see Adding On-Premises Microsoft Organizations.

For more information on deprecated features in Veeam Backup for Microsoft 365, see this Veeam KB article.