How do I create a list of all Microsoft 365 users?

Listing all users in Microsoft 365 can be useful in various scenarios, such as managing user accounts, auditing, or using with sync.blue®. In this article, we'll show you how to list all users in Microsoft 365 using PowerShell.

1. Install PowerShell.

2. Define the user used with sync.blue® as “syncblueuser”:

$syncblueuser = "m.mustermann@xxx.onmicrosoft.com"

3. Install the ExchangeOnlineManagement module:

Install-Module -Name ExchangeOnlineManagement

4.  ExchangeOnlineManagement authorize:

Connect-ExchangeOnline -UserPrincipalName $syncblueuser -ShowProgress $true

5. Read the users:

$users = (Get-Mailbox -ResultSize Unlimited).PrimarySmtpAddress -join ","

6. View the output:

Write-Output $users

Use this output, for example, when synchronizing contacts with multiple Exchange Online users or for granting mailbox permissions.