Install Microsoft Graph PowerShell module

Microsoft Graph API

Microsoft Graph is a REST API that you can use to connect to M365 services using web requests (HTTP)

You can use Graph API to read or write data for Teams, Entra ID (Azure AD), Exchange Online and more.

Install MS Graph PowerShell module

# Install prerequisites
Install-PackageProvider -Name NuGet -Force
Install-Module -Name PowerShellGet -Force
 
# Set execution policy
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned
 
# Install Microsoft Graph PowerShell
Install-Module Microsoft.Graph

Connect to MS Graph PowerShell

Connect-MgGraph -Scopes User.Read.All

Update MS Graph module

Update-Module Microsoft.Graph

MS Graph permissions and scopes

You can connect to Microsoft Graph using delegated or application permissions

Delegated permissions (scopes)
Used to grant the application permissions on behalf of the signed in user

Application permissions (app roles)
Used for application only access (without a signed in user)

MS Graph uses permissions scopes for each API. When you connect to Graph API, you must specify the permission scope for the data you want to read or write.

For example, to use Get-MgUser to lookup user information, you will need User.Read.All permissions

Sign in to Office 365 and grant permissions 

Get users with MS graph PowerShell

Get list of users with PowerShell Get-MgUser

$Users = Get-MgUser -Top 5
Write-Output $Users | format-table

Get one user with Get-MgUser

Get-MgUser -userid user@domain.com | fl

Get one user and select properties

# Get user properties, select display name and email address
Get-MgUser -userid user@domain.com | select DisplayName,UserPrincipalName

References:
Install the Microsoft Graph PowerShell SDK
https://learn.microsoft.com/en-us/powershell/microsoftgraph/installation

Microsoft Graph PowerShell Get-MgUser
https://learn.microsoft.com/en-us/powershell/module/microsoft.graph.users/get-mguser

Overview of Microsoft Graph permissions
https://learn.microsoft.com/en-us/graph/permissions-overview