M365 PowerShell

Block Microsoft 365 User Using Microsoft Graph PowerShell

A step-by-step guide to teach you how to use PowerShell to block a user from logging in and accessing Microsoft 365 services.

Blocking a user in Microsoft 365 (Office 365) from signing in can be an effective way to restrict access without directly modifying user passwords or deleting accounts. This can be done easily using Microsoft Graph API via PowerShell.

Step 1: Install the Microsoft Graph PowerShell Module

Run Install-Module -Name Microsoft.Graph -Scope CurrentUser command to install Microsoft Graph PowerShell module.

Step 2: Authenticate

You must authenticate to Microsoft Graph with the required permission User.ReadWrite.All.

Connect-MgGraph -Scopes "User.ReadWrite.All" is the command.

Step 3: Identify the User

Find the user you want to block. You can identify them by their user principal name (UPN), email, or object ID.

Step 4: Block the User

To block the user, you’ll need to disable their sign-in status. This can be done by setting the accountEnabled parameter to $false. This doesn't delete the user or their data but prevents them from signing in.

Unblocking the Blocked User Account

To unblock the user, you’ll need to enable their sign-in status. This can be done by setting the accountEnabled parameter to $true

Note: Read Microsoft Documentation on Blocking Microsoft 365 user accounts using Graph PowerShell for more information.

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