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.NET Forum / .NET Framework / Setup / November 2006Version conflict
Hi I have version 1 of an app already installed on client computers. Now I want to install version 2 of the app while keeping version 1 for now so client can test version 2 while keep on using version 1 for now. When I try to install version 2 I get the message "Another version of the product is installed...". How can I get round this? Thanks Regards I have now changed the product id of the app and recreated the set-up. This time it goes past the stage where it gave message last time but now it says 'Unable to install because a newer version of this product is already installed.' which is strange as I have just compiled this latest version and it should be the newest. What am I missing? Thanks Regards > Hi > [quoted text clipped - 7 lines] > > Regards Hello, John! J> What am I missing? It seems to me that you have smth wrong in our Upgrade MSI table ( http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/upgra de_table.asp ) Did you changed Package GUID? What do you use to build your setup package? -- Regards, Vadym Stetsyak www: http://vadmyst.blogspot.com I did change the package id after my post and before second post. I am using vs2003 set-up project to create set-up msi. Anything I can do from here? Thanks Regards > Hello, John! > [quoted text clipped - 10 lines] > Regards, Vadym Stetsyak > www: http://vadmyst.blogspot.com Hello, John! J> Anything I can do from here? Just a hint you can disable flags in setup project properties. Set to false DetectNewerInstalledVersion If you want to have more control over install process, then setup project is not appropriate for you. As an altrenative you can try using WiX ( http://www.tramontana.co.hu/wix/ ) ( http://wix.sourceforge.net ) -- Regards, Vadym Stetsyak www: http://vadmyst.blogspot.com I am worried that forcefully installing version 2 could effect working of version 1. How can .net be convinced that version 1 & 2 are completely different apps and should not be related to each other? Thanks Regards > Hello, John! > [quoted text clipped - 14 lines] > Regards, Vadym Stetsyak > www: http://vadmyst.blogspot.com You've built a separate setup so that MSI sees both setups as different products, but it's up to you to make sure that you can run two versions of the app on the same system. The tricky areas will be items that are shared or should be unique, such as services, folders used by the running app, identical assemblies in the GAC, identical shared files in other places.  SignaturePhil Wilson [Microsoft MVP Windows Installer] >I am worried that forcefully installing version 2 could effect working of >version 1. How can .net be convinced that version 1 & 2 are completely [quoted text clipped - 22 lines] >> Regards, Vadym Stetsyak >> www: http://vadmyst.blogspot.com Any information available somewhere on how to do that? There must be others in the same situation wanting to deliver more than one app from the same base code (basically different generations of the same app). There are no common services or folders in my case though. Thanks Regards > You've built a separate setup so that MSI sees both setups as different > products, but it's up to you to make sure that you can run two versions of [quoted text clipped - 28 lines] >>> Regards, Vadym Stetsyak >>> www: http://vadmyst.blogspot.com To install 2 versions of a product Side by side: Change the ProductName and Version for the two versions in Setup properties. Set the properties DetectNewerInstalledVersion to False and RemovePreviousVersions to False. To install one version of a product over the previous installation: Change the ProductName and Version for the two versions in Setup properties. Set the properties DetectNewerInstalledVersion to True and RemovePreviousVersions to True. Make sure that 'version' Property of the latest should be greater when compared to earlier other wise you will get a message 'Unable to install decause a newer version of this product already installed'
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