A: The same rule applies. Each disconnected port will log a separate warning.
Click the icon or the Remove option next to the serial port. Click Save and power on the VM.
When powering on a virtual machine (VM) in VMware Workstation or ESXi, you might encounter a persistent warning message: virtual device serial0 will start disconnected
For debugging, named pipes offer low latency and are ideal for VM‑to‑VM communication. For remote access across physical locations, TCP network connections are appropriate. For logging crash information, file‑based serial ports (stored on a datastore) provide reliable storage.
The warning carries unique implications in different operational contexts. A: The same rule applies
If your workflow requires an active virtual serial port (e.g., for kernel debugging, firmware development, or connecting legacy Cisco equipment), you must route the connection to a valid resource instead of a missing physical port. Open the virtual machine and select Serial Port .
Which and version are you using (VMware Workstation, ESXi, Fusion)? Click Save and power on the VM
If the device isn't visible in the GUI or the message persists, you can manually remove the offending lines from your VM's configuration file: Open your VM's folder and locate the .vmx file. Open it with a text editor (like Notepad or TextEdit). Find and delete the following lines: serial0.fileType = "thinprint" serial0.fileName = "thinprint" serial0.present = "TRUE" Save and close the file, then restart your VM. Troubleshooting Physical Port Conflicts