M365 Changelog: Change required for your user provisioning process

MC678807 – Microsoft applied a change to user provisioning and user record matching from Microsoft Entra to prevent the reuse of User Principal Names (UPNs). Previously, users with recycled UPNs had access to business records of which they never had access to or ownership.

What action do I need to take?
If you currently use UPN match to import data into Dynamics 365, you must make the following changes to your process:

1. Create the user records in Microsoft Entra before starting your data import process.
2. Sync the user(s) from Microsoft Entra into the environment(s) where you intend to perform data import. You can perform this sync using any of the following methods:
   • Adding a security group to the environment
   • Adding the user manually in the environment
   • Using PowerShell scripts to add the user to the environment
   • Leveraging Force sync in Power Automate flows
3. Once the system syncs the user(s) into the environment (see verification instructions below), run your data import workflows.

To verify that the user has been added to your environment:

1. From the Microsoft Power Platform admin center, select the environment to which you added users via one of the multiple methods listed above.
2. Select Settings > Users + permissions > Users.

This will display the list of users that have already been added to the environment. This list includes users with enabled and disabled status.