I have been running VMware for the last year no problems, today I opened it up to start one of my VM and get an error message, see screen shot.
I did follow
If you are someone who maintains an open customized "Run as administrator" command prompt or powershell command line window at all the times you can optionally setup the following aliases / macros to simplify executing the commands mentioned by @gue22 for simply disabling hyper-v hypervisor when needing to use vmware player or workstation and then enabling it again when done.
doskey hpvEnb = choice /c:yn /cs /d n /t 30 /m "Are you running from elevated command prompt" ^& if not errorlevel 2 ( bcdedit /set hypervisorlaunchtype auto ^& echo.^&echo now reboot to enable hyper-v hypervisor )
doskey hpvDis = choice /c:yn /cs /d n /t 30 /m "Are you running from elevated command prompt" ^& if not errorlevel 2 ( bcdedit /set hypervisorlaunchtype off ^& echo.^&echo now reboot to disable hyper-v hypervisor )
doskey bcdL = bcdedit /enum ^& echo.^&echo now see boot configuration data store {current} boot loader settings
With the above in place you just type "hpvenb" [ hypervisor enabled at boot ], "hpvdis" [ hypervisor disabled at boot ] and "bcdl" [ boot configuration devices list ] commands to execute the on, off, list commands.