File data components automatically installed/related with their product so unique guids are not needed. However, non file data components ( such as registry keys ) behave a little different and need to have unique components with conditions to associate with the various instances being installed. Here's a StackOverflow exchane with links addressing the question at hand: http://stackoverflow.com/questions/5046712/msi-wix-assigning-component-guids-during-multiple-instance-transforms
--- Christopher Painter, Author of Deployment Engineering Blog Have a hot tip, know a secret or read a really good thread that deserves attention? E-Mail Me --- On Mon, 5/9/11, Fredrik Staxäng <fst...@gmail.com> wrote: From: Fredrik Staxäng <fst...@gmail.com> Subject: Re: [WiX-users] Multiple runs of same installer To: "General discussion for Windows Installer XML toolset." <wix-users@lists.sourceforge.net> Date: Monday, May 9, 2011, 7:09 AM What about component guids? I have tried to understand the component rules, and I thought that each component (that is each target file if one does component per file) should have it's own guid. I thought that if two target files used the same guid, one would be left behind after trying to install both. ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users