Please refer to MC1053121 regarding this change, moving forward. Microsoft 365 will prompt eligible users to back up files to OneDrive via the Message Bar in Word, Excel, and PowerPoint. The rollout starts mid-March 2025 for Public Preview and early April 2025 for General Availability. No action is required from admins, and the feature will be enabled automatically.
Applies to: OneDrive for Business · Microsoft 365 apps
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).