Change SharePoint site group ownership; or remove list of sites and groups

Question

Is it possible to change a SharePoint site's list of group owners in Powershell?

I had users populate a CSV with Title, Alias, and Owners headings corresponding to the SharePoint sites they needed created, after which I created them using the following script:

$AdminUrl   = "https://tenant-admin.sharepoint.com/"
$RootUrl        = "https://tenant.sharepoint.com/"

$CSVFileName = .\SiteCollections.csv

$sites      = Import-Csv "$CSVFileName"

Connect-PnPOnline $AdminUrl -UseWebLogin

foreach ($site in $sites) {
    [String[]]$siteOwners = $site.Owners.split(";")

    New-PnPSite -Type TeamSite -Title $site.Title -Alias $site.Alias -Owners $siteOwners -Wait      
}

After creating the sites however, I was informed that the site owners needed to be changed, as well as some of the site titles and URL's.

I was unable to add/remove members to the sites' owners group via Powershell, and when I decided to just remove all of the sites and recreate them, I got the error Remove-SPOSite : This site belongs to a Microsoft 365 group. To delete the site, you must delete the group. Attempting to remove the groups by the Microsoft 365 group name resulted in Remove-SPOSiteGroup : Group cannot be found.

Is there any way I can rectify the owners' group members, or otherwise remove them on mass to start again?

Answer 1

Hi @Thomas Lu , welcome to Q&A forum!

Microsoft groups and SharePoint groups are two different groups. Microsoft 365 groups are used for collaboration between users, both inside and outside your company. With each Microsoft 365 group, members get a group email and shared workspace for conversations, files, and calendar events, Stream and a Planner:

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As an admin, you can manage Office 365 groups through Microsoft 365 admin center.

Log in to the Microsoft 365 Admin Center site: https://admin.microsoft.com
Expand Groups and Click on Groups in the left navigation.
Select the Office 365 group to delete.
In the details pane, click on the “Delete” button and confirm the delete group in Office 365.

Reference:
Manage a group in the Microsoft 365 admin center
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

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