### Software Requirements RAS Publishing Agent and RAS Secure Client Gateway (64-bit versions only) RAS Publishing Agent and RAS Secure Client Gateway are supported on the following operating systems: Windows Server 2019. Both Server Core and Desktop Experience installations are supported. Windows Server 2016. Both Server Core and Desktop Experience installations are supported. Windows Server 2012 R2 Windows Server 2012 Windows Server 2008 R2 Windows Server 2008 Note: RAS Publishing Agent and RAS Secure Client Gateway should NOT be installed on a domain controller or any other machine where a DHCP server is running. This in general applies to any of the RAS components. RAS Web Administration Service Must be installed on the server where RAS Publishing Agent is running. Before installing RAS Web Admin Service, make sure that your Windows server has the following updates installed: Windows Server 2012 R2 — KB2999226 Windows Server 2008 R2: — KB2999226 and KB2533623 Newer versions of Windows Server do not require any specific updates. RAS RD Session Host Agent RAS RD Session Host Agent is supported on the following operating systems: Windows Server 2019 Windows Server 2016 and newer must be installed using the "Desktop Experience" installation option. Windows Server 2012 R2. Note that Server Core installation option is NOT supported. Windows Server 2012 Windows Server 2008 R2 Windows Server 2008 RAS VDI Agent RAS VDI Agent is supported on the following operating systems: Windows Server 2019 Windows Server 2016 Windows Server 2012 R2 Windows Server 2008 R2 Windows Server 2012 Windows Server 2008 VMware, Nutanix, and Citrix Hypervisor can use Windows-based RAS VDI agent either integrated into RAS Publishing Agent or installed separately on Windows Server 2012 R2 and Windows Server 2016. RAS VDI Agent can also be installed as a virtual appliance (OVA or VMDK), which can be downloaded from the Parallels website. For installation instructions and requirements, please see the corresponding hypervisor documentation. For the list of supported hypervisors, see RAS VDI Agent Installation Options. RAS Guest Agent Windows Server 2008 R2 and newer Windows 7 and newer Remote PC Agent Windows Server 2008 R2 and newer Windows 7 and newer Parallels RAS PowerShell Windows Server 2008 with Service Pack 2 and newer. Windows Management Framework 3.0 and .NET Framework 4.5.2 must also be installed. Parallels RAS Console Windows Server 2008 R2 and newer Windows 7 and newer RAS HTML5 Gateway Windows Server 2008 R2 and newer. Note that RAS HTML5 Gateway will NOT work with Windows Server 2008 (plain, not R2). RAS Enrollment Server Windows Server 2019 Windows Server 2016 Windows Server 2012 R2 Windows Server 2012 Windows Server 2008 R2 Parallels Client Parallels Client is approved for the following operating systems (both 32-bit and 64-bit systems are supported, where applicable): Windows 7, 8.x, 10 Windows Server 2008 R2 and newer macOS 10.11 "El Capitan" - macOS 10.15 "Catalina" iOS 11 and newer (Parallels Client for iOS 17.1 and above) iOS 9 and newer (Parallels Client for iOS 17.0.2 and below) Android 4.4 and newer Chrome OS Parallels Client for Linux supports the following Linux distributions (x64 versions only): Ubuntu 16.04 Ubuntu 18.04 Linux Mint 19 Debian 9.5.0 Fedora 28 CentOS 7.5