What could be a reason for a system administrator being unable to install Hyper-V on a Microsoft Windows Server 2016?

The inability to install Hyper-V on Microsoft Windows Server 2016 can be attributed to the system having only 2 GB of memory. Hyper-V, as a hypervisor, requires a significant amount of system resources, including memory, to effectively create and manage virtual machines. Windows Server 2016 recommends a minimum of 4 GB of RAM for Hyper-V to function properly and provide a reasonable level of performance for running virtual machines.

Having only 2 GB of memory may lead to insufficient resources for both the host operating system and any virtual machines the administrator tries to run, thus preventing a successful installation of the Hyper-V role. A system administrator will typically need to ensure that the hardware meets the minimum specifications for running Hyper-V, which includes adequate memory capacity to support virtualization needs.