The minimum system configuration to install OpenCities Map update 16 on Virtualize Environment is : Citrix XenApp 7.13 64-bit on Windows Server 2012 R2 .

Reference: https://docs.bentley.com/LiveContent/web/OpenCities%20Map%20Help-v14/en/GUID-D1BD64F6-DCE5-460A-A649-FAA2571780BE.html