Bulk adding/removing users from multiple O365 groups

Question

Hi all,

I'm trying to find two PowerShell scripts to achieve the following:

1. Remove all Owners & Members from a defined list of multiple O365 groups.
2. Add 2 users as Owners for the same defined list of multiple O365 groups.

All of the information I've found online seems to point towards removing a single user from all groups and not a defined selection.

I hope you can assist me with this requirement, please let me know if you need any further information.

Many thanks,

Alex.

Answer 1

function RemoveAllOwnerAndMembers {
    param(
        [Parameter(Mandatory)]
        [Guid[]]$GroupIds
    )

    foreach ($Id in $GroupIds) {
        $Owners = Get-AzureADGroupOwner -ObjectId $Id
        foreach ($Owner in $Owners) {
            Remove-AzureADGroupOwner -ObjectId $Id -OwnerId $Owner.ObjectId
        }
        $Members = Get-AzureADGroupMember -ObjectId $Id
        foreach ($Member in $Members) {
            Remove-AzureADGroupMember -ObjectId $Id -MemberId $Member.ObjectId    
        }
    }
}

function AddNewOwners {
    param(
        [Parameter(Mandatory)]
        [Guid[]]$GroupIds,
        [Parameter(Mandatory)]
        [Guid[]]$NewOwnersIds
    )

    foreach ($Id in $GroupsIds) {
        foreach ($NewOwnerId in $NewOwnersIds) {
            Add-AzureADGroupOwner -ObjectId $Id -RefObjectId $NewOwnerId
        }
    }
}

Connect-AzureAD

# Replace values
RemoveAllOwnerAndMembers -GroupIds <guid_or_string_array>
AddNewOwners -GroupIds <guid_or_string_array> -NewOwnersIds <guid_or_string_array>

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