Script to mass disable sync for Office 365 Groups

Looks like it was still reading from my older version of CSOM, but got it working quick and dirty:

Add-Type -Path "C:\SP\Microsoft.SharePointOnline.CSOM.16.1.6112.1200\lib\net45\Microsoft.SharePoint.Client.dll"
Add-Type -Path "C:\SP\Microsoft.SharePointOnline.CSOM.16.1.6112.1200\lib\net45\Microsoft.SharePoint.Client.runtime.dll"

# SharePoint Authentication
$username = "<username here>"
$password = '<password here>'
$securePassword = ConvertTo-SecureString $Password -AsPlainText -Force 
$credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $securePassword) 

Write-Host "Fetching O365 Groups" -ForegroundColor Yellow
$o365Groups = get-unifiedgroup
$count = 0

foreach($group in $o365Groups){
    $count++
    Write-Host ""
    Write-Host $count $group.DisplayName $group.primarysmtpaddress -ForegroundColor Cyan

    $clientContext = New-Object Microsoft.SharePoint.Client.ClientContext($group.SharePointSiteUrl) 
    $clientContext.Credentials = $credentials 

    if ($clientContext.ServerObjectIsNull.Value) { 
        Write-Host "Unable to connect to: '$url'" -ForegroundColor Red
    } else {
        Write-Host "Connected to: '$($group.SharePointSiteUrl)'" -ForegroundColor Green 

        $Libraries = $clientContext.Web.Lists
        $clientContext.Load($Libraries)
        $clientContext.ExecuteQuery()

        foreach($Library in $Libraries){
            if($Library.BaseTemplate -eq "101"){
                Write-Host $Library.Title
                $Library.ExcludeFromOfflineClient=$true
                $Library.Update()
            }
        }

    }

}