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.