Virtual Device Serial0 Will Start Disconnected =link= Info
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Right-click the virtual machine in your library and select .
Locate the folder where your VM files are stored and find the file. Open it with a text editor (like Notepad). Find and delete the following lines: serial0.fileType = "thinprint" serial0.fileName = "thinprint" serial0.present = "TRUE" Save the file and restart the VM. Method 3: Disable "Connect at Power On"
Ensure the box is checked only if the target file or pipe is configured correctly. Click OK to commit the settings. Fixing the Error via the .VMX Configuration File virtual device serial0 will start disconnected
Ensure the drop-down menu selects a valid, unallocated physical COM port on the current host.
Which are you using? (vSphere ESXi, Workstation, or Fusion?)
One VMware Fusion user reported: "Every time Fusion starts… I get this error message. This is due to Fusion 13.5 removing ThinPrint virtual printing from the product. The message is harmless (although virtual printers are no longer available in the VM)." Solutions range from ignoring it to editing the VM's configuration file to remove ThinPrint‑related lines. This public link is valid for 7 days
The message "virtual device serial0 will start disconnected" is a benign informational log from virtualization software (commonly QEMU/KVM, VirtualBox, or libvirt) indicating that a virtual serial device (named serial0) is configured but will not be connected to a host endpoint at VM start. It does not by itself indicate an error but explains why a guest serial port is inactive; troubleshooting depends on whether this was intentional.
Alternatively, if you want the port present but disconnected at boot, find or add this line: serial0.startConnected = "FALSE" Use code with caution. Save the file and reload the VM in VMware. When Should You Keep the Serial Port Enabled?
Virtual Device Serial0 Will Start Disconnected: Causes and Fixes Can’t copy the link right now
You are using a VM template that originally had a serial port mapped for debugging.
Provide instructions on creating a named pipe for serial communication in Windows. Let me know which of these would be most helpful! Share public link
The VM configuration is looking for a physical serial port ( COM1 , COM2 , etc.) on your modern host computer, but modern motherboards rarely feature these legacy ports.
