Microsoft KB Archive/886382

= You may receive an &quot;Unable to initialize Virtual Switch Networking&quot; error message when you start a Virtual PC for Mac Version 7 virtual machine =

Article ID: 886382

Article Last Modified on 11/11/2004

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APPLIES TO


 * Microsoft Virtual PC for Mac Version 7

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SYMPTOMS
When you start a Microsoft Virtual PC for Mac Version 7 virtual machine, you may receive the following error message:

Unable to initialize Virtual Switch Networking.

Access to the external network and host will be unavailable to all guests using Virtual Switch Networking. Guests using Virtual Switch will still be able to access other guests using Virtual Switch.

The virtual machine starts, but you cannot connect to your network or to the Internet from the virtual machine.



CAUSE
This problem occurs when you start a Microsoft Virtual PC for Mac Version 6.1 virtual machine that uses Virtual Switch Networking before you start a Virtual PC for Mac Version 7 virtual machine that uses Virtual Switch Networking.

Note This problem occurs even if you exit Virtual PC for Mac Version 6.1 before you start Virtual PC for Mac Version 7.



WORKAROUND
To work around this problem, you must exit Virtual PC and then restart your Macintosh computer. When you do this, the Macintosh computer's memory is cleared, and Virtual PC for Mac Version 7 can use Virtual Switch Networking.

Additional query words: VPC VPC7 VPC6.1

Keywords: kbtshoot kbnetwork kbprb KB886382

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