Event ID 12321 — Serial Device Startup

Applies To: Windows Server 2008

This is preliminary documentation and subject to change.

This Aspect refers to events pertaining to the serial port of the virtual machine.

Event Details

Product: Windows Operating System
ID: 12321
Source: Microsoft-Windows-Hyper-V-Worker
Version: 6.0
Symbolic Name: MSSERIAL_PORT_OPEN_ERROR_SUMMARY
Message: Error '%4' (%5) while opening file '%3' during serial device startup.

Resolve

Restart virtual machine

Try restarting the virtual machine.

Verify

The virtual machine is able to start successfully.

Serial Device Startup

Hyper-V