Windows 11 compatibility 607 Frank Mateo Mon, Jun 6, 2022 Time Software/Systems 0 4223 Time Guardian pc based is compatible with Windows 8 to Windows 11. This will include equivalent servers- Windows Server 2012 to Windows Server 2022. TG versions for above: 5.5.1.1 (mtx-15 only) 5.6 5.7 6.0 6.1