Windows Virtual Machine loses network connectivity abruptly and the Ethernet Adapter is missing.
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Windows Virtual Machine loses network connectivity abruptly and the Ethernet Adapter is missing.

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Article ID: 368701

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Updated On:

Products

VMware vCenter Server VMware vSphere ESXi 8.0

Issue/Introduction

Windows Virtual Machine loses its Ethernet Adapter.

  • Network connectivity to and from the Windows Guest OS is lost.
  • The Network adapter is missing under VM settings. 
  • The Network adapter is connected, however, the Guest OS cannot see its Ethernet Adapter.

The Virtual Machine Log file reports the below events:

Log file: /vmfs/volumes/<Datastore>/<VirtualMachine-Name>/vmware.log 

YYYY-MM-DDTHH:MM:SS.891Z In(05) vcpu-0 - CPT: vm was stunned for 80515 us
YYYY-MM-DDTHH:MM:SS.891Z In(05) vcpu-0 - Powering off Ethernet0
YYYY-MM-DDTHH:MM:SS.892Z In(05) vcpu-0 - Hot removal done.

The ESXi host vmkernel logs report the below events:

Log file: /var/log/vmkernel.log

YYYY-MM-DDTHH:MM:SS.707Z cpu8:28691940)NetPort: 1810: disabled port 0x6000022
YYYY-MM-DDTHH:MM:SS.710Z cpu8:28691940)Vmxnet3: 14062: indLROPktToGuest: 1, vcd->umkShared->vrrsSelected: 7 port 0x6000022
YYYY-MM-DDTHH:MM:SS.710Z cpu8:28691940)Vmxnet3: 14329: Using default queue delivery for vmxnet3 for port 0x6000022
YYYY-MM-DDTHH:MM:SS.711Z cpu8:28691940)Vmxnet3: 1727: UPT feature is disabled.
YYYY-MM-DDTHH:MM:SS.711Z cpu8:28691940)NetPort: 3054: resuming traffic on DV port 4
YYYY-MM-DDTHH:MM:SS.711Z cpu8:28691940)NetPort: 1543: enabled port 0x6000022 with mac xx:xx:xx:xx:xx:xx
YYYY-MM-DDTHH:MM:SS.748Z cpu6:28691938)NetPort: 1810: disabled port 0x6000022
YYYY-MM-DDTHH:MM:SS.818Z cpu6:28691938)VSCSI: 7804: handle 123230901009129480(GID:8200)(vscsi0:0):Destroying Device for world 28691930 (pendCom 0)
YYYY-MM-DDTHH:MM:SS.891Z cpu6:28691938)VSCSI: 4752: handle 123230901009129481(GID:8201)(vscsi0:0):Creating Virtual Device for world 28691930 (FSS handle 522084495) numBlocks=188743680 (bs=512)
YYYY-MM-DDTHH:MM:SS.891Z cpu6:28691938)VSCSI: 273: handle 123230901009129481(GID:8201)(vscsi0:0):Input values: res=0 limit=-2 bw=-1 Shares=1000
YYYY-MM-DDTHH:MM:SS.892Z cpu6:28691938)Net: 3608: dissociate dvPort 4 from port 0x6000022
YYYY-MM-DDTHH:MM:SS.892Z cpu6:28691938)Net: 3614: disconnected client from port 0x6000022

Environment

VMware vCenter Server

vSphere ESXi 

Cause

The Ethernet adapter was ejected from the Windows Guest OS.

If HotPlug is enabled, The Safely Remove Hardware option for the virtual hardware appears in the Windows System Tray.

Resolution

If the Network Adapter does not exist on the VM, add and configure a new Network Adapter.

If the Network Adapter does exist on the VM, reconnect the network adapter and reboot the VM.

Additional Information

You can disable HotPlug capability for devices using the vSphere Client or by editing the .vmx file of the Virtual Machine. This setting does not interfere with CPU/memory HotPlug capabilities.

For more information, see, Disabling the HotAdd/HotPlug capability in virtual machines

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