Microsoft KB Archive/833260

= The network adapter on the host PC loses network connectivity when you start a guest PC =

PSS ID Number: 833260

Article Last Modified on 12/18/2003

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The information in this article applies to:


 * Connectix Virtual PC for Windows version 5.2

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SYMPTOMS
After you configure your guest PC network settings by using the Connectix Virtual PC for Windows Virtual PC Emulated Ethernet Switch service, the host PC loses network connectivity when you start the guest PC. You may receive the following error message on the guest PC:Virtual PC could not open its emulated Ethernet switch driver. Virtual switch networking will be disabled. To fix this problem, reenable the Virtual PC Emulated Ethernet Switch service or reinstall Virtual PC.



CAUSE
This issue may occur when the Virtual PC Emulated Ethernet Switch driver is missing, corrupted, or disabled. This issue may also occur when registry keys that are associated with the Virtual PC Emulated Ethernet Switch driver are missing or corrupted.



RESOLUTION
To resolve this issue, reinstall the Virtual PC Emulated Ethernet Switch driver on the host PC. To do this, follow these steps:
 * 1) Quit Virtual PC if it is running.
 * 2) Open the properties of the network adapter, and then click Install.
 * 3) Click Service, and then click Add.
 * 4) Click Have Disk, and then click Browse.
 * 5) Locate the C:\Program Files\Connectix\Connectix Virtual PC\Utilities\VPCNetSv folder, click VPCNetS2.inf, and then click Open.
 * 6) Click OK.
 * 7) Restart the computer.



WORKAROUND
To work around this issue to restore network connectivity on the host PC, remove the Virtual PC Emulated Ethernet Switch service from the network adapter on the host PC. This workaround only restores network connectivity on the host PC. This workaround does not restore network connectivity on the guest PC. To restore network connectivity on the host PC, follow these steps:
 * 1) Open the properties of the network connection on the host PC.
 * 2) Click Virtual PC Emulated Ethernet Switch, click Uninstall, and then click Yes.

Keywords: kbfix kbprb KB833260

Technology: kbConnectix kbvirtualpcSearch kbVirtualPCWin520 kbVirtualPCWinSearch

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