How to fix VMWare Fusion 10.x High Sierra USB Device not recognized

In order to resolve this issue the fastest way you should try these simple steps.

  • Shutdown all your guest VMs.
  • Shutown VMWare Fusion.
  • Open VMWare Fusion and check for updates. Install latest updates if there any available.
  • Ensure that you have installed VMWare tools in all the guest withc which you wish to use USB Device sharing.
  • Shutdown VMWare Fusion.
  • To to Applications and Move to Trash VMWare, Enter password to confirm.
  • Open Trash, select VMWare, right-click and select Put Back. Enter password to confirm.
  • Open System Preferences… and open Security & Privacy panel.
  • Open VMWare Fusion. Look in Security & Privacy General Tab and Allow the application to make changes using the Allow button. Enter your Password when prompted.
  • This may require your to reboot your MacOS in order to make the changes.

Overcommit Memory with VMWare Fusion v7, v8, v9, v10+

If you are using VMWare Fusion on your machine and want to have high memory allocation for your machines you will need to add a setting in the VMWare Fusion config file.

These settings are cannot be changed via the GUI.

To make this change you will want to do the following.

Open the config file

sudo nano /Library/Preferences/VMware\ Fusion/config


prefvmx.minVmMemPct = %

Where % is the amount of system memory to allocate to VMWare Fusion.

Acceptable values, any percentage value. i.e.

  • 25
  • 50
  • 100