MC1075910 - OneDrive: Prompt to Add Personal Account to OneDrive Sync

Updated August 12, 2025: We have updated the timeline. Thank you for your patience.

Users have long been able to useThis feature prompts users who are signed into a personal Microsoft accounts with theaccount on a Windows device and actively using their corporate OneDrive app on corporate Windows devices—unless restricted by admin policy. This new feature introduces a prompt only when a personal account is already signed in on the device, encouraging users to also sign in tointo OneDrive with their personal account. Once signed in, users can access both their personal and corporate OneDrive accounts on the OneDrive app with that account.same device—without merging content.

This message is associated with Microsoft 365 Roadmap ID490064

When this will happenhappen:

General Availability (Worldwide): We will begin rolling out in mid-JulyJune 2025 (previously mid-June) and expect to complete by early September 2025 (previously early August).July 2025.

How this will affect your organizationorganization:

This new feature introducesprompts users who are signed into a personal Microsoft account on a Windows device and actively using their corporate OneDrive to also sign into OneDrive with their personal account. Once signed in, users can access both their personal and corporate OneDrive accounts on the same device—without merging content. The prompt is enabled by default and only whenappears if a personal account is already signed in use on the device, encouraging users to also sign in to the OneDrive app withdevice. Organizations that account. This update does not “sync” personal files with corporate accounts or vice versa. It simply allows access to separate OneDrive accounts on the same device without merging content – similar to checking both work and personal emails on one device without combining inboxes. Administrators who have alreadypreviously restricted personal accounts on corporate devices can continue to manage this as before.

Importantly, this prompt does not combine or transfer files between personal and corporate accounts. Users must take deliberate action to move or save files between accounts, and Microsoft blocksaccount usage with the move of known folders to personal OneDrive accounts from domain joined devices by default. Additionally, data protection features such as sensitivity labels and data loss prevention (DLP) policies continue to apply.

Devices in regions where the Digital Markets Act is applicableDisablePersonalSync policy will not see thisthe prompt. Administrators can also suppress it using the DisableNewAccountDetection policy. 

What you need to do to prepareprepare:

If you don’t want the message prompting users