> Should I be manually changing the product code of each instance every time? Or should the base product code be static also? Or ought it not matter?
Follow the Windows Installer documentation guidelines as for when to change your PC: http://msdn.microsoft.com/en-us/library/aa370579(v=VS.85).aspx . There are some cases where changing the PC on every build might be justified; I'm not sure what your servicing strategy is... Also, review the guidance regarding the UpgradeCode: http://msdn.microsoft.com/en-us/library/aa372399(v=VS.85).aspx > In summary, my question is how should I author the installation package and how should I run it in order to upgrade only a single installation instance (when there are multiple installed instances)? Windows Installer's "Upgrade" table has a field called 'ActionProperty': http://msdn.microsoft.com/en-us/library/aa372379(v=vs.85).aspx WiX allows you to define that property name through the "UpgradeVersion" element's attribute called "Property". WiX documentation here notes: "When the FindRelatedProducts action detects a related product installed on the system, it appends the product code to the property specified in this field....After the FindRelatedProducts action is run, the value of this property is a list of product codes, separated by semicolons (;), detected on the system." Armed with all of this information it should be clear why all of your existing instances are being removed. Thus, one rather simple way of removing only the instance you care about is to author a custom action to manipulate the value of your 'ActionProperty' after 'FindRelatedProducts' has executed. You could totally clear it out (install a new instance), or set it to the instance product code you wish to have 'upgraded'. There are other things to consider, but this should get you headed in a more proper direction. ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
