Fusion 10 on High Sierra - Guests Do Not Start - Host Does Not Support Virtualizing Real Mode

Fusion 10 on High Sierra - Guests Do Not Start - Host Does Not Support Virtualizing Real Mode

Calvin_Zhang Oct 5, 2017 9:01 AM (in response to louistaljaard)

I had upgraded to Fusion 10 from 8.5 on my mid-2010 iMac, I could not open any vm regardless if it is Windows, Linux or Debian OS. Therefore It is not only Windows-VMs based issue, it affects all vms in my case. The VM Fusion 10 will be running no problem but I just can't open my vms if it has older mac hardware.

There is a work-around but not courage to do so because it causes extremely slow vm startup....

Quit Fusion 10 and create the file if it doesn't exist:

/Library/Preferences/VMware\ Fusion/config

 

In this file add the line:

monitor.allowLegacyCPU = "true"

I still suggest to use VMware Fusion 8 or 8.5 on older Mac hardware till they have added back the supported cpus.

 

Calvin