Adobe RoboHelp Server 11 is supported on 64-bit architecture of the Microsoft Windows operating system.
For Adobe RoboHelp Server 11.5 version supports the following operating systems:
Windows Server 2019
Windows Server 2016
Windows 10
For Adobe RoboHelp Server 11.4 and earlier versions support the following operating systems:
Windows Server 2019
Windows Server 2016
Windows Server 2012 R2