Event ID 12800 — NIC Configuration

Updated: April 7, 2009

Applies To: Windows Server 2008

This is preliminary documentation and subject to change.

This Aspect refers to network switchport, static and dynamic MAC address issues.

Event Details

Product: Windows Operating System
ID: 12800
Source: Microsoft-Windows-Hyper-V-Worker
Version: 6.0
Message: Cannot modify the Ethernet address when the virtual machine is online.


Change property after taking turning off virtual machine

You cannot change some NIC properties while the virtual machine is on. Turn Off the virtual machine and then change the property.

Note: Turning off a virtual machine is equivalent to powering off a computer, so data loss is possible.


The virtual machine starts and runs network operations without any problems.

NIC Configuration