: The VM is set to connect to a physical COM port on your host machine that does not exist or is currently being used by another application.
Does your virtual machine have or a TPM enabled? These can sometimes complicate the manual editing process.
How to Fix: "Virtual device serial0 will start disconnected"
Many Linux appliances (like Kali Linux, Ubuntu Server, or network firewalls like pfSense) are pre-configured with serial ports because they are often used in headless server environments where admins manage them via text commands over a serial connection.
