M365: O365 Groups – PowerShell script to verify whether guest access is enable or disabled

by Prasham Sabadra · Published March 8, 2020 · Updated March 8, 2020

Hi All,

LIFE IS BEAUTIFUL 🙂 Today with O365 groups 🙂

Background: We have O365 applications where users orders Teams. We have custom form for ordering the Teams. On custom form there is classification selection either Internal or External as shown in below figure:

Custom Teams creation App - "External classification" field based on this External sharing will be enabled or disabled — Fig1: M365 : Custom Teams creation App – “External classification” field based on this External sharing will be enabled or disabled

So here, if Team owner has selected classification as “External” then we are enabling guest access on respective O365 group otherwise disabling the guest access.

So we have implementation done and we are testing but any how we noticed that guest access settings are not working. So we need to check whether really guest access which we are updating through our CSOM job is working or now.

To verify guest access is really working for Office 365 group or not, we have only one option PowerShell script. So here is the article, I am sharing this small PowerShell script.

“AllowToAddGuests” property is used to update the “Guest Access” for O365 group. This means ability to add guest to O365 group owners.

Detailed Steps:

Import “AzureADPreview” module

Import-Module AzureADPreview

Connect to AzureAD

AzureADPreview\Connect-AzureAD

Get the group ID

$groupID= (Get-AzureADGroup -SearchString "<Group name>").ObjectId

Get the group settings

Get-AzureADObjectSetting -TargetObjectId $groupID -TargetType Groups | fl Values

Complete PowerShell script:

Import-Module AzureADPreview
AzureADPreview\Connect-AzureAD
$groupID= (Get-AzureADGroup -SearchString "<Group name>").ObjectId
Get-AzureADObjectSetting -TargetObjectId $groupID -TargetType Groups | fl Values

When we will execute the above commands, it will prompt for User Name and Passwords as