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Knowledge Base

Virtual NIC settings on a Windows guest are lost after a virtual hardware upgrade (1015572)

Last Updated: 10/30/2013Categories: TroubleshootingTotal Views: 78503Language:
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Symptoms

After upgrading a Windows virtual machine from hardware version 4 to hardware version 7, virtual NIC settings (such as static IP configuration) are lost.

Resolution

This issue occurs when the virtual network card configured in the virtual machine is moved to a different position on the virtual PCI bus and results in the guest Operating System treating the existing virtual network card as a new hardware device.

Overview of the VMUpgradeHelper Tool

To workaround this issue, use the VMUpgradeHelper service before performing the virtual hardware upgrades on a virtual machine. For the updated version of VMware Upgrade helper, see:

VMware ESX 4.0, Patch ESX400-201009401-SG: Updates VMkernel, CIM, Scripts, VMware Tools, VMklinux, and VMX (1023759)

VMware ESXi 4.0, Patch ESXi400-201009402-BG: Updates VMware Tools (1025322).

The purpose of the VMUpgradeHelper service:

It allows you to save the current configuration of any virtual network cards to the registry.

It allows you to restore a previously saved configuration, overwriting the current configuration of the virtual network cards.

Note: The VMUpgradeHelper service is only available with the latest version of VMware Tools, so you must upgrade VMware Tools before upgrading from a hardware version 4 virtual machine to a hardware version 7 virtual machine. For more information, see:

Overview of VMware Tools (340)

Install VMware Tools on a Windows Guest in the vSphere Basic System Administration Guide

Settings that are saved when using the VMUpgradeHelper Tool

The VMUpgradeHelper service saves and restores the following NIC information:

IP

IPv4/v6 network addresses and subnets masks

Default gateways and cost metrics

DHCP state (enabled or disabled)

DNS

Domain name

Server search order list

The Register this connection's addresses in DNS setting

Settings that are not saved using the VMUpgradeHelper Tool
The VMUpgradeHelper service does not save the following network protocol connections:

WINS

The NetBios setting

Alternate configuration settings

IP filtering

Permitted IP protocols

Permitted TCP ports

Permitted UDP ports

Using the VMUpgradeHelper Tool

Note: In later versions of VMware Tools the VMUpgradeHelper tool may have a .bat extension. The usage is the same as the .exe version.

VMUpgradeHelper.exe / VMUpgradeHelper.bat usage:

/s Saves network configuration into the registry.

/r Restores network configuration from the registry.

/i Installs the VMUpgradeHelper service.

/u Removes the VMUpgradeHelper service.

Recommended procedure to save the network configuration before performing a virtual hardware upgrade:

Open a command prompt inside the Windows virtual machine.

Navigate to the VMware Tools install directory (C:\Program Files\VMware\VMware Tools).

Save the network configuration using one of the following:

VMUpgradeHelper.exe /s

VMUpgradeHelper.bat /s

Power off virtual machine and upgrade virtual machine hardware. See Upgrading a virtual machine to the latest hardware version (1010675)

Power on virtual machine and open a command prompt inside the Windows virtual machine.

Navigate to the VMware Tools install directory (C:\Program Files\VMware\VMware Tools).

Restore the virtual machine network configuration using one of the following:

VMUpgradeHelper.exe /r

VMUpgradeHelper.bat /r

Related Information

Upgrading a virtual machine to the latest hardware version (multiple versions)
Restoring NIC settings using the VMUpgradeHelper /r command fails with the error: The service encountered an error either reading or writing a device property
Networking Error: IP address already assigned to another adapter
升级虚拟硬件后 Windows 客户机上的虚拟网卡设置丢失
仮想ハードウェアをアップグレードすると、Windows ゲストの仮想 NIC 設定が失われる

Detectable by VMware SkylineTM

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Language:
Chinese (Simplified)JapaneseEnglish

Attachments

Additional Resources

KB
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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

KB
•
vCenter Server で ESX/ESXi ホストが断続的に切断と再接続を繰り返す (2004457)

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•
Download and Install VMware Fusion (2014097)

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