Completely power off the affected virtual machine (do not just suspend it).
Elias froze. He hadn't touched the keyboard. The dialogue box appeared again, but the text had changed:
You likely accidentally added a Serial Port during the setup wizard. virtual device serial0 will start disconnected
A single line of text appeared on the terminal: WHO IS PROBING THE SILENCE?
The VM is connected to a named pipe that isn't currently active. Completely power off the affected virtual machine (do
Method 1: Remove the Serial Port (Recommended for Most Users)
Or QEMU command line:
Open the [VM_Name].vmx file using a text editor like vi or Notepad++.
The solution depends on your virtualization platform. Below are instructions for and ESXi . The dialogue box appeared again, but the text
The "virtual device serial0 will start disconnected" message is a benign configuration alert indicating a hardware mismatch between your virtual machine settings and your physical host machine.
This comprehensive article explains exactly what this message means, why it appears, when it is a problem, and how to fix or suppress it.