Article ID: 824433
This article describes how to find or replace the product key (or certificate of authority) for a Microsoft Windows guest operating system in Virtual PC.
The product key for a Microsoft Windows guest operating system is included with each copy of Virtual PC. Use the appropriate method for your version of Windows to find the product key.
Microsoft Windows 95 and Microsoft Windows 98The product key is included on a separate card that is included with the corresponding Windows manual. For some versions of Virtual PC, the product key is located on the front cover of the manual.
Microsoft Windows Millennium EditionThe product key is included on a separate card that is included with the corresponding Windows manual.
Microsoft Windows 2000The product key is located on the back of the Quickstart guide.
Lost product keysIf you can start your guest operating system and that system is Windows 95, Windows 98, or Windows Millennium, follow these steps to find your product key in the guest operating system:
Article ID: 824433 - Last Review: June 20, 2014 - Revision: 4.0
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.