Add Group Members

PowerShell Script

# Script 2: Add users to existing SharePoint permission groups

            param(
                [string]$SiteUrl = "https://tenantName.sharepoint.com/sites/siteName",
                [string]$ClientId = "",
                [string]$GroupName = "" # Define the group name
            )
            
            # Define the list of users to add to the group (modify these email addresses)
            $UserEmails = @(
                "user@tenant.com"
            )
            
            try {
                # Connect to SharePoint Online site
                Write-Host "Connecting to SharePoint site: $SiteUrl" -ForegroundColor Green
                Connect-PnPOnline -Url $SiteUrl -Interactive -ClientId $ClientId
                
                # Check if group already exists
                $existingGroup = Get-PnPGroup -Identity $GroupName -ErrorAction SilentlyContinue
                
                if (-not $existingGroup) {
                    Write-Host "Error: Group '$GroupName' doesn't exist." -ForegroundColor Red
                    return
                }
                
                Write-Host "Found existing group: $GroupName" -ForegroundColor Green
                
                # Add users to the group
                Write-Host "Adding users to group: $GroupName" -ForegroundColor Green
                $successCount = 0
                $failCount = 0
                
                foreach ($userEmail in $UserEmails) {
                    try {
                        Write-Host "Processing $userEmail..." -ForegroundColor Yellow
                        
                        # Get the group members to check if user already exists
                        $GroupMembers = Get-PnPGroupMember -Identity $GroupName | Select-Object -ExpandProperty Email
                        
                        # Check if the user is already a member
                        if ($GroupMembers -contains $userEmail) {
                            Write-Host "⚠ $userEmail is already a member of $GroupName" -ForegroundColor Yellow
                            continue
                        } else {
                            Write-Host "$userEmail is not a member of $GroupName. Adding..." -ForegroundColor Yellow
                            # Add the user to the group using Add-PnPGroupMember
                            Add-PnPGroupMember -LoginName $userEmail -Identity $GroupName
                            Write-Host "✓ Added $userEmail to $GroupName" -ForegroundColor Green
                            $successCount++
                        }
                        
                    } catch {
                        Write-Host "✗ Failed to add $userEmail to $GroupName - Error: $($_.Exception.Message)" -ForegroundColor Red
                        $failCount++
                    }
                }
                
                # Summary
                Write-Host "`n--- Summary ---" -ForegroundColor Cyan
                Write-Host "Successfully added: $successCount users" -ForegroundColor Green
                Write-Host "Failed to add: $failCount users" -ForegroundColor Red
                
                # Display final group members
                Write-Host "`nFinal members of '$GroupName':" -ForegroundColor Cyan
                $finalMembers = Get-PnPGroupMember -Identity $GroupName
                foreach ($member in $finalMembers) {
                    Write-Host "  - $($member.Email) ($($member.Title))" -ForegroundColor White
                }
                
            } catch {
                Write-Host "Error: $($_.Exception.Message)" -ForegroundColor Red
            } finally {
                Disconnect-PnPOnline
            }