Error :

VMware Workstation and Hyper-V are not compatible. Remove the Hyper-V role from the system before running VMware Workstation.

Solution

This is because the Hyper-V role is installed and this conflicts with VMware Workstation. To disable Hyper-V from starting the following command can be used:

bcdedit /set hypervisorlaunchtype off

Open command prompt with Run as Administrator

A reboot of of the Windows OS is necessary.

To enable the Hyper-V role again use the following command:

bcdedit /set hypervisorlaunchtype auto

A reboot of of the Windows OS is necessary.