[Whiteboard] Legacy Whiteboard migration to OneDrive

🚨 The Signal: Legacy Azure-backed Whiteboards must migrate to OneDrive storage by September 25, 2026. Unmigrated Whiteboards become read-only, then are permanently deleted, risking data loss and compliance issues if not actioned.

The Impact

Organizations with legacy Azure Whiteboards face data loss and compliance risks if content is not migrated to OneDrive by the deadline.

• Admins: Must identify and migrate legacy Whiteboards to prevent permanent data deletion.
• Users: Will lose access to unmigrated Whiteboard content after October 16, 2026.
• Security Teams: Face data integrity and availability risks if Whiteboard content is not secured in OneDrive.
• Compliance Teams: Risk non-compliance with data retention policies due to unrecoverable data loss.

The Action

1. Identify legacy Azure-backed Whiteboards within your tenant using Microsoft 365 admin tools.
2. Communicate migration requirements and deadlines to affected users.
3. Initiate migration of legacy Whiteboards to OneDrive-backed storage using available tooling.
4. Verify successful migration and content accessibility in OneDrive.
5. Establish a process for ongoing Whiteboard governance and lifecycle management within OneDrive.

Impact: high · Workload: OneDrive · Essential Eight: Regular Backups · ISM: ISM-1511, ISM-1515, ISM-1705, ISM-1706, ISM-1707, ISM-1708, ISM-1810, ISM-1811, ISM-1812, ISM-1813, ISM-1814