If you do not explicitly use virtual printing, removing the legacy device is the cleanest fix. the virtual machine completely. Open Edit Virtual Machine Settings .
I can provide specific script examples or targeted steps for your exact setup. Share public link
This comprehensive guide explores why this warning occurs, its impact on virtual machines, and the step-by-step methods required to resolve it permanently. Understanding the Roots of the Warning
Which and version are you using (VMware Workstation, ESXi, Fusion)? virtual device serial0 will start disconnected
Do you a serial port or console connection for this specific virtual machine? Are you running this VM on a Windows, Linux, or macOS host?
, a technology that allows a virtual machine to use the host's printers. When VMware can't find the necessary driver on the host or the feature is turned off in the main preferences, it alerts you that the device won't be active during the session [ Are you currently using a
This message typically appears in virtual machine platforms (like , VirtualBox , or QEMU ) or network simulation tools (like GNS3 or EVE-NG ). If you do not explicitly use virtual printing,
Ninety-nine percent of standard desktop users do not need a serial port in their virtual machine. Modern operating systems handle communication via USB and network protocols. Removing the unneeded hardware stops the error completely. For VMware Workstation / Player (Windows/Linux):
Troubleshooting VMware: "Virtual device serial0 will start disconnected"
It typically appears as a pop-up window immediately after you power on a virtual machine (VM). While it often looks like a critical error, it is usually just a configuration notification. I can provide specific script examples or targeted
For 99% of modern users: No. Modern operating systems (Windows 10/11, modern Linux) and modern software do not use serial ports for anything critical. You can usually ignore this, but it is annoying.
Thus, the emulator takes a conservative approach: "Assume nothing is connected until the user explicitly wires something up." The message is simply the router’s driver reporting the status dictated by the emulation layer.