In everyday work I use Win10 powered machine, so some time ago I decided to use Hyper-V as the default virtualization solution. It works as expected although there are some problems with network from time to time, but it's fine for me.
Recently I needed to use VMware machine, so I installed VMware Player and got error.
The case is clearly described at https://weblogs.asp.net/dixin/run-hyper-v-and-vmware-virtual-machines-on-windows-10
and the solution is provided there.
There is also StackOverflow page with topic related to this issue: https://stackoverflow.com/questions/30496116/how-to-disable-hyper-v-in-command-line
Basically you cannot use at the same time both VMware and Hyper-V. In order to use VMware, the Hyper-V need to be disabled.
The easiest way is to use PowerShell with Admin privileges:
To disable:
bcdedit /set hypervisorlaunchtype off
To enable:
bcdedit /set hypervisorlaunchtype auto