Synchronize local domain users with Microsoft 365

Objective

The aim of this tutorial is to show you how to synchronize users of your existing, local domain with Microsoft 365. If you have any questions on this, we highly recommend you get back with your Microsoft partner.

Process

System Admin
Add/ synchronize users
System Admin
Use the idFix tool

Prerequisites

  • Make sure that the values in your directory are unique and there are no duplicates (mail, proxyAddresses and userPrincipalName)
  • UPN attribute for each local user account (userPrincipalName) is configured to match the primary email address of the licensed Microsoft 365 user
  • Microsoft Entra Connect is installed
  • Directory synchronization is set up

Click Through

  • Start in the Microsoft 365 Admin Center
  • Under Sign in and security, select Add user or synchronize with your Microsoft account
  • Select the Get started option
  • Run the IdFix tool to prepare the directory synchronization

Hint

  • In the event that the Active Directory domain ends with a non-routable suffix such as .loca. or .lan, first adjust the UPN suffix of the local user accounts (instead of a routable Internet suffix such as .com or .org). For more information see this guide.
  • When configuring Microsoft Entra Connect, it is recommended to enable password synchronization, seamless single sign-on and password override.
HR