Windows installer does allow multi-instancing. There is a topic devoted to it in the MSI SDK. It isn't trivial to set up but it supposedly works (never had to use it myself).
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Denis Ahearn Sent: Thursday, February 01, 2007 6:32 AM To: wix-users@lists.sourceforge.net Subject: [WiX-users] Installing product multiple times on one machine Hello, My company produces a software product that deploys as an ASP.NET web application and set of web services. We have used WiX to produce a slick installer that installs an instance of the product (i.e. virtual directories for the web application and web services) on a web server. The problem we have is that our installer can only be run once per web server, as Windows Installer won't allow multiple instances of the same "product" to be installed on the same machine. Our software doesn't yet support multi-tenancy (i.e. multiple customers within the same product instance), so currently we must deploy a separate instance of the product for each of our customers. This approach doesn't scale well since a separate web server is then required for each install (customer). We wrote our installer to prompt for things like the virtual directory names, database name, path on the file system for the install, etc., so theoretically if the installer could be run multiple times on the same machine, you could provide unique values for each of those installation parameters and allow the various product instances to coexist on the same machine. I suspect that WiX and Windows Installer is not the right installation technology for what we need to do, but is there a way to use them the way we would like (i.e. run the installer multiple times on the same machine)? If not, can someone suggest an alternate installation technology better suited for our product? Thanks, Denis Ahearn Director Product Development Superior Edge 201 North Broad Street, Suite #305 Mankato, MN 56001 Direct: 952-200-8516 Fax: 507-388-7820 Email: [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]> [cid:image001.jpg@01C74607.42B2FBD0] http://www.superioredge.com<http://www.superioredge.com/>
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