Event ID 12581 — NIC Configuration

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: 12581
Source: Microsoft-Windows-Hyper-V-VMMS
Version: 6.0
Symbolic Name: VM_NIC_INVALID_DYNAMIC_MAC_SUMMARY
Message: Invalid MAC address.

Resolve

Reconfigure dynamic MAC address

Turn Off the virtual machine.

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

Set the Static MAC Address property to all zeroes, enable Dynamic MAC Address, and then restart the virtual machine.

Verify

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

NIC Configuration

Hyper-V