| Event Id | 12671 |
| Source | Microsoft-Windows-Hyper-V-SynthNic |
| Description | The switch port connection for "%4" is already in use. |
| Event Information | According to Microsoft : Cause : This event is logged when switch port connection is already in use in virtual machine. Resolution : Change the switch port of the NIC Turn Off the virtual machine. Note: Turning off a virtual machine is equivalent to powering off a computer, so data loss is possible. Change the virtual machine NIC settings to point to a different/valid switch port, and then restart the virtual machine. Verify : The virtual machine starts and runs network operations without any problems. |
| Reference Links | Event ID 12671 from Microsoft-Windows-Hyper-V-SynthNic |
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