Operating Systems - Windows 10, 8.1, 8, 7, Vista.
MS Outlook - MS Outlook 2019, 2016, 2013 (32-bit and 64-bit versions), 2010, 2007, 2003
Windows Server - Windows Server 2012, 2008 R2, 2008, 2003 R2, 2003
Exchange Server - Exchange Server 2019, 2016, 2013, 2010, 2007, 2003, 2000, 5.5, and 5.0