Konstantin, Thanks for your comment.
My tests show that directory / component Ids stay the same from build-to-build, but not their GUIDs. Does this mean that only directory / component Ids are used in patching in WiX 3.0, not GUIDs? Thanks, Shibo from Konstantin Vlasenko subject Re: [WiX-users] Component GUIDs >From the Wix documentation: For the Component element the generated GUID is based on the install directory and filename of the KeyPath for the component. This GUID will stay consistent from build-to-build provided the directory and filename of the KeyPath do not change. -- View this message in context: http://n2.nabble.com/Component-GUIDs-tp704489p3294919.html Sent from the wix-users mailing list archive at Nabble.com. ------------------------------------------------------------------------------ _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users