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Is there a way to add a security group as Primary or secondary site collection administrator to all the sites in the tenant via PowerShell?

I know this works for adding a user account to all the sites as SC Admin

$Sites = Get-SPOSite -Limit ALL
Foreach ($Site in $Sites)
{
Set-SPOUser -site $Site.Url -LoginName $AdminName -IsSiteCollectionAdmin $True

The same command with Set-SPOSiteGroup does not work

Set-SPOSiteGroup : A parameter cannot be found that matches parameter name 'IsSiteCollectionAdmin'

Since 'IsSiteCollectionAdmin' is not accepted with Set-SPOSiteGroup

Any suggestions on how to set security group as site collection administrator via PS script/ cmdlets?

2 Answers 2

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Just tried it here and worked for me. I'm using PNP and assuming you got the Security group ID from Azure AD. Microsoft documentation also states:

"You must be a Site Collection Admin to run...[the Add-PnPSiteCollectionAdmin] ...command. Use Set-PnPTenantSite -Owners if you are not an Admin for the site but have the SharePoint admin role."

Connect-PNPOnline "https://tenant.sharepoint.com/sites/SiteCollection"
$web = Get-PnPWeb
$admins = Get-PnPSiteCollectionAdmin
write-host "Original Site Colletion Admins: " $admins
$azureADGroup = "c:0t.c|tenant|AzureAD-SecurityGroup-ID"
$ensureUser = $web.EnsureUser($azureADGroup)
$user = Get-PnPUser -Identity $azureADGroup
Add-PnPSiteCollectionAdmin -Owners $user.LoginName
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You can not add AD security group as Site Collection administrator.

Refer This link.

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  • 1
    This seems to be really outdated and definitely not for SharePoint Online. Aug 21, 2019 at 21:22

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