Virtual Device Serial0 Will Start Disconnected Jun 2026
If you are seeing this message during a high-speed production boot, it may slow down the startup process slightly. However, for most users, simply disabling the virtual printer feature (Solution 1) will resolve the issue.
This message typically appears in or VMware Fusion when a virtual machine (VM) is configured to look for a serial port that is unavailable, invalid, or belongs to a legacy feature no longer supported. Why it Happens
Let’s fix the interface so that it starts connected. The solution depends entirely on your lab environment. virtual device serial0 will start disconnected
After this, show ip interface brief still shows Serial0 down/down .
The message appears for several legitimate and common reasons: If you are seeing this message during a
If the device doesn't appear in the standard settings menu, you can remove it directly from the configuration file. Shut down the VM and close VMware.
A VMware expert explained: "To get rid of the message, edit the .vmx file manually and remove 3 lines (two referencing serial0 and one additional one referencing 'thinprint')." Why it Happens Let’s fix the interface so
: On a Linux system, the error Unable to open the "serial0" serial port: No such file or directory is a more explicit version of the warning. The VM cannot find the symbolic link /dev/ttyS0 (the typical path for COM1). The fix is to create the link or use a different path. This is a common issue on older or minimal Linux installations.
