You likely accidentally added a Serial Port during the setup wizard.
The warning is completely harmless.
Connects the virtual serial port to a host socket or another VM for debugging utilities like WinDbg. Click OK and boot the machine. Editing the VMX File Directly virtual device serial0 will start disconnected
Most modern virtual machines (Windows 10/11, Linux servers, Ubuntu) do not require a physical serial port. Removing it is the best way to get rid of the warning. your virtual machine. Open the VM settings in VMware Workstation/Player. Select Serial Port 1 (or Serial0 ). Click Remove . Click OK and start the virtual machine. Solution 2: Disable "Connect at Power On"
: The .vmx configuration file contains parameters for serial0 that the hypervisor cannot process, such as an invalid file type or destination. How to Fix It Method 1: Disable Virtual Printing (Recommended) You likely accidentally added a Serial Port during
Depending on your needs, you can either remove the device entirely or reconfigure it to clear the error. Option 1: Remove the Printer Device (Recommended)
However, if you are attempting to boot a specialized operating system that requires a console output on the serial port, it may hang at boot. In that case, you must ensure the port is properly connected to a file or a named pipe. Click OK and boot the machine
Which and version are you using (VMware Workstation, ESXi, Fusion)?
environments and indicates that a virtual serial port cannot find its intended hardware or software backend during power-on