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Backup of Microsoft Teams Fails With: Object reference not set to an instance of an object

KB ID: 4201
Product: Veeam Backup for Microsoft 365 | 7.0
Published: 2023-04-25
Last Modified: 2023-04-25
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Challenge

Backup of Microsoft Teams in Veeam Backup for Microsoft 365 fails with the following error:
Error: Object reference not set to an instance of an object.

Cause

This issue is related to recent changes in the response syntax of the Microsoft Graph API to a specific request that Veeam Backup for Microsoft 365 uses in order to process Microsoft Teams.

Solution

Veeam and Microsoft are working to develop a long-term solution.

In the meantime, a workaround has been implemented in Veeam Backup for Microsoft 365 7 P20230421 (7.0.0.3007) which will reduce the occurrences of the error.

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