Here’s how you can handle this situation:
Azure AD Join: Have users join their existing devices to Azure AD using their Microsoft 365 domain accounts. This process will convert their local accounts to Azure AD accounts without requiring new accounts.
Set Primary Alias: For users using @outlook.com emails, set their Microsoft 365 domain email as the primary alias in the Microsoft 365 admin center. This will transition their email and user profile to the correct domain account.
Device Enrollment: Enroll devices in Intune using automatic enrollment settings. Users won’t need to create new accounts or reset their devices.
Data Migration:
- Windows User Profile Transfer: Use the User State Migration Tool (USMT) to transfer user profiles and data between accounts or to an Azure AD-joined account.
- Third-Party Tools: Consider third-party migration tools that facilitate data migration between user profiles on the same device without manual data transfer or OneDrive reliance.
By following these steps, you can migrate users and devices without significant disruptions or data ownership issues.