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Function Sync-OutlookCalendar 
{
	# Connect to Outlook
	$Outlook = New-Object -com Outlook.Application
	# Get Calendars
	$Calendar1 = $Outlook.Session.folders.Item(1).Folders | where {$_.DefaultMessageClass -eq "IPM.Appointment"}
	$Calendar2 = $Outlook.Session.folders.Item(2).Folders | where {$_.DefaultMessageClass -eq "IPM.Appointment"}
	# Search Calendar Items
	$Calendar1Items = $Calendar1.items | Where {$_.Start -gt (Get-Date)} | Select-Object -Property Start, End, Subject, Location, MeetingStatus
	# Sync All: $Calendar1Items = $Calendar1.items | Select-Object -Property Start, End, Subject, Location, MeetingStatus
	# Sync Calendar Items
	Foreach ($Calendar1Item in $Calendar1Items)
	{
		$SearchDuplicate = $Calendar2.items | Where {$_.Start -eq $Calendar1Item.Start -and $_.End -eq $Calendar1Item.End -and $_.Subject -eq $Calendar1Item.Subject} | Select-Object -Property Start, End, Subject, Location, MeetingStatus
		if ($SearchDuplicate -eq $null)
		{
			$Appointment = $Calendar2.Items.Add(1)
			$Appointment.Start = $Calendar1Item.Start
			$Appointment.End = $Calendar1Item.End
			$Appointment.Subject = $Calendar1Item.Subject
			$Appointment.Location = $Calendar1Item.Location
			$Appointment.MeetingStatus = $Calendar1Item.MeetingStatus
			$Appointment.Save()
		}
		else
		{
			Write-Host "Appointment is already exist"
		}
	}
}

Function Sync-OutlookCalendar { # Connect to Outlook $Outlook = New-Object -com Outlook.Application # Get Calendars $Calendar1 = $Outlook.Session.folders.Item(1).Folders | where {$_.DefaultMessageClass -eq "IPM.Appointment"} $Calendar2 = $Outlook.Session.folders.Item(2).Folders | where {$_.DefaultMessageClass -eq "IPM.Appointment"} # Search Calendar Items $Calendar1Items = $Calendar1.items | Where {$_.Start -gt (Get-Date)} | Select-Object -Property Start, End, Subject, Location, MeetingStatus # Sync All: $Calendar1Items = $Calendar1.items | Select-Object -Property Start, End, Subject, Location, MeetingStatus # Sync Calendar Items Foreach ($Calendar1Item in $Calendar1Items) { $SearchDuplicate = $Calendar2.items | Where {$_.Start -eq $Calendar1Item.Start -and $_.End -eq $Calendar1Item.End -and $_.Subject -eq $Calendar1Item.Subject} | Select-Object -Property Start, End, Subject, Location, MeetingStatus if ($SearchDuplicate -eq $null) { $Appointment = $Calendar2.Items.Add(1) $Appointment.Start = $Calendar1Item.Start $Appointment.End = $Calendar1Item.End $Appointment.Subject = $Calendar1Item.Subject $Appointment.Location = $Calendar1Item.Location $Appointment.MeetingStatus = $Calendar1Item.MeetingStatus $Appointment.Save() } else { Write-Host "Appointment is already exist" } } }