Purpose
This article documents the procedure for enabling Veeam Backup for Microsoft 365 to backup Teams public channel posts using the Teams Export APIs.Veeam Backup for Microsoft 365 backs up Teams channel messages. For more information on the limitations of Teams chat backup, click here.
In Veeam Backup for Microsoft 365 7 and previous versions, by default, EWS APIs are used to back up the TeamsMessagesData folder; however, Microsoft has deprecated Exchange Web Services (EWS) backup for the TeamsMessagesData folder. With EWS API access to the TeamsMessagesData folder now deprecated, the only way for Veeam Backup for Microsoft 365 to back up Teams public channel posts is using the Teams Graph Export APIs.
Solution
Follow these steps to activate the new method to back up Teams data via Teams Export APIs:
Preparation
Make sure your Microsoft 365 organization has access to the Teams Export APIs.KB4322: How to request access to Microsoft Graph Teams Export APIs
Make sure you understand the Considerations and Limitations associated with the backup of Microsoft Teams Data.Microsoft Teams Data Backup - Considerations and Limitations
More Information
Teams data backup: Considerations and Limitations
Veeam KB4453: Impact of Microsoft EWS Deprecation on Microsoft Teams Backup
