This article provides steps to downgrade VMware Fusion 6.0 to 5.x.
Environment
VMware Fusion 5.x VMware Fusion 6.x
Resolution
Note: The information applies only if you were evaluating Fusion 6.x. If you upgraded Fusion 6.x from 5.x then your Customer Connect account will not have a Fusion 5 license key, as it would have been upgraded to Fusion 6.
To downgrade VMware Fusion 6.x to 5.x:
Fusion 6.x uses a different hardware version than Fusion 5.x. You must downgrade the hardware version of your virtual machine to version 9.
To downgrade your virtual hardware:
Shut down the virtual machine. If the virtual machine is in a suspended state, resume it, then shut it down.
Right-click the virtual machine and click Settings.
If your Fusion 6.0 trial period is over and you are unable to change the compatibility level from within VMware Fusion, contact VMware Support for a temporary key that extends your trial period and allows you to downgrade your virtual machine. For more information, see Filing a Support Request in Customer Connect (2006985).