Since last years release of VMware Workstation (9.0) it is possible to pass through touch input to your virtual machine. While this definitely is a nice feature if you’re using a touch-enabled computer it isn’t particular useful on a non-touch system.
By default the touch input is only enabled for touch-enabled operating systems like Windows 8. Normally this is fine but with Windows 8.1 Microsoft has introduces some annoying help dialogs to get you to know all the swipe gestures available. Unfortunately I can’t “Swipe in from the edge to go back to the lsat app you were using” on my MacBook.
You can of course disable those messages using some Windows setting but why not disable the touch input completely if it isn’t used after all?
To disable touch input you have to open the .vmx file of your virtual machine and change the parameter
touchscreen.vusb.present = "TRUE"
touchscreen.vusb.present = "FALSE"
This also applies to VMware Fusion.