Release Information for Veeam Backup for Microsoft 365 8.3

New Features and Enhancements

• The following .NET components were updated to version 8.0.21:
  • Microsoft ASP.NET Core Runtime
  • Microsoft .NET Desktop Runtime
  • Microsoft .NET Runtime
• The Monthly Usage Report for rental licenses now automatically submits on the third day of each month.
• The following REST API endpoints now require at least one of these parameters—changedItems or deletedItems—to be true:

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/restore
    

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/restore
    

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/{mailboxId}/restoreTo
    

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/{mailboxId}/folders/{folderId}/restoreTo
    

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/{mailboxId}/items/restoreTo
    

  • (POST) /v8/RestoreSessions/{restoreSessionId}/organization/mailboxes/{mailboxId}/items/{itemId}/restoreTo
    

• Optimized wait times between requests during SharePoint restore affected by throttling.
• Added a mechanism to identify and repair items with Microsoft Purview Sensitivity Labels affected by the issue in KB4754.

Bug Fixes

General

• The following issues may occur on object storage repositories with versioning enabled or previously enabled:
  • Adding a new repository may stall in the "Creating repository" state.
  • Backup jobs may fail with the error:

    Timeout has expired: 900000 milliseconds
    

• Notification emails for backup job results are not sent if the job exceeds the specified backup window.
• Adding a Linux proxy via PowerShell fails with the error:

  SSHKEYCONVERTER.EXE executable not found.
  

• No results are returned when using the 'Item URL' parameter in advanced search.
• During the upgrade from Veeam Backup for Microsoft 365 v7 to v8.x, the custom installation folder choice is ignored, and the product installs to the default path.

Backup and Backup Copy

• SharePoint and OneDrive backup jobs heavily query the database, causing failures with the error:

  PostgreSQL database operation failed multiple times with transient error.
  

• Backup jobs fail with the error:

  Retry transient error after 00:00:00.
  

• After upgrading to v8x, backup jobs processing SharePoint and Teams objects take much longer to complete.
• Backup copy job via archiver appliance fails with error:

  Failed to install the PostgreSQL server
  

• The job cancellation command could cancel itself, causing the job to remain in a Canceled state.

Restore

• Restoring a team from an organization added via the REST API (POST /v8/Organizations) may fail with the error:

  Value cannot be null or empty.
  

• After upgrading to v8x, mailboxes initially backed up with Veeam Backup for Microsoft 365 v5 to an object storage repository that was removed and re-added may not appear when exploring backups.
• A mailbox may appear in the Restore Portal without any items available for browsing or restore.
• Saving SharePoint or OneDrive documents locally fails when the data size exceeds the machine's available disk space.
• The restored SharePoint site list hierarchy may differ from the original.

REST APIs

• The (GET) /v8/ProtectedUsers endpoint returns the old OneDrive URL if a backed-up OneDrive user from a multi-geo organization moves between regions between backup job runs.
• The (GET) /v8/ProtectedSites/{protectedSiteId} endpoint mistakenly returns the old URL for a site whose URL was changed between backup job runs.
• POST and PUT v8/Proxies requests ignore the useInternetProxy: false parameter.

Data Management

• Moving a team from a Jet-based to an object storage repository using the Move-VBOEntityData cmdlet fails with the error:

  Invalid serialized stream, invalid data stream.
  

• Deleting a group mailbox from a repository using the Remove-VBOEntityData cmdlet returns the warning "Group mailbox not found" if the mailbox's organization has been removed from the Veeam Backup for Microsoft 365 scope.
• Moving a SharePoint site from a Jet-based to an object storage repository using the Move-VBOEntityData cmdlet may stall under certain conditions.

Reporting

• Generating reports via REST APIs—such as Storage Consumption, License Overview, Mailbox Protection, and User Protection—fails with the error:

  Could not find a part of the path.
  

• A Storage Consumption report may omit data for some days in the reporting interval.
• Under certain conditions, a Storage Consumption report may show an incorrect first date for the reported change and inaccurate daily change rates.