Operational Defect Database

BugZero found this defect 427 days ago.

Veeam | kb4436

Veeam Backup for Microsoft 365 Backup Copy May Fail to Transfer Microsoft Teams Channel Messages

Last update date:


Affected products:

Veeam Backup for Microsoft 365

Affected releases:


Fixed releases:

No fixed releases provided.



Issue Summary In certain situations, when using a Backup Copy Job with an Archive Appliance to copy data from a Backup Job that was set up solely to protect Teams data via Teams Export APIs, the transfer of Teams channel messages may fail.   Requirements for the Issue to Occur This issue only affects Backup Copy Jobs under the following criteria: The Backup Copy Job was initially created using one of the following versions: Veeam Backup for Microsoft 365 6a (build Veeam Backup for Microsoft 365 6a P20220825 (build Veeam Backup for Microsoft 365 6a P20220926 (build Microsoft Graph Export API for Teams is activated; The Backup Copy Job was created for a Backup Job that only transferred Teams data; Either Amazon or Azure Archive Appliances are used for backup copy data placement.   Issue Detection Script If you are unsure whether your Backup Copy Jobs are affected by this issue, use the following script to detect affected Backup Copy Jobs and their Repositories. To use the script, please: Enable the REST API service; Download the script; Modify the script to specify the Veeam Backup for Microsoft 365 server's name and provide account credentials that can be used to connect it. Run the script, and the output will show you all possibly affected backup copy jobs. Note: If a copy job or repository was renamed or deleted, it would not appear in the script output.   Should you have any questions, don't hesitate to contact Veeam Technical Support.


If the current Veeam Backup for Microsoft 365 configuration fits the description above, please do the following: Update to either: Veeam Backup for Microsoft 365 6a (P20230322)or Veeam Backup for Microsoft 365 (P20230302) After the update/upgrade, using the PowerShell cmdlet Start-VBOCopy with the new "-Full" parameter to perform a full sync for Teams backup copy data.   Example:

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