Virtual Device Serial0 Will Start Disconnected 'link' May 2026

You moved the VM from a host that had a physical COM port to one that doesn't.

Here is a deep dive into why this happens and how you can fix it. Why Does This Message Appear?

If you’ve recently powered on a VMware Virtual Machine (VM) only to be greeted by the message you aren’t alone. While this warning might seem alarming, it’s usually a minor configuration mismatch rather than a sign of a failing system. virtual device serial0 will start disconnected

The VM is set to connect to a named pipe or a physical port that is disconnected. How to Fix the "Serial0" Warning

Depending on whether you actually need the serial port, there are two main ways to handle this. Method 1: Remove the Serial Port (Recommended) You moved the VM from a host that

In the world of virtualization, "Serial0" refers to a virtual serial (COM) port assigned to your VM. This error occurs because the VM is configured to look for a physical or virtual serial port on the host machine that either or is currently in use by another application. Common scenarios include:

You are using a VM template that originally had a serial port mapped for debugging. If you’ve recently powered on a VMware Virtual

Troubleshooting VMware: "Virtual device serial0 will start disconnected"