Tag: vmmon

Permission error when run Fusion VM

Permission error when start Fusion VM


When trying to start a newly created virtual machine in VMware Fusion, following error occurred

Error: Could not open /dev/vmmon...

This is because Fusion has no permssion to open device file required.


  • Navigate to System Preferences > Security & Privacy on the host macOS (High Sierra, Mojave and Catalina).
  • Under the General tab towards the bottom of the window, you see error similar to following message with option to click on “Allow”:
System software from vendor "VMware, Inc." was blocked from loading.
  • Click Allow.
  • Restart Fusion, and start virtual machine again.
  • If some other permission errors occurr again, repeat above steps.


Error: Could not open /dev/vmmon: Broken pipe, while launching the Virtual Machine (80467)