I've done a lot of multiple instance work ( even within the last couple of
months ). The big reason why I could see why UpgradeCode can't be * is
because it would break major upgrades. The UpgradeCode property is far
stickier then ProductCode and PackageCode.
I've written some code that allows for servicing multiple instance minor
upgrade packages. Basically when you run the application it checks the
OriginalDatabase to see if it's changed and if it has it invokes msiexec
with all the right arguments to make the magic happen.
----------------------------------------
From: "Rob Mensching" <r...@robmensching.com>
Sent: Friday, September 02, 2011 1:48 PM
To: "General discussion for Windows Installer XML toolset."
<wix-users@lists.sourceforge.net>
Subject: Re: [WiX-users] How should I be upgrading one of multiple
installed instances of an application?
I think there is a feature request open to allow WiX to updated the
UpgradeCode for each instance transform. It just hasn't been implemented.
Same could be done for the ProductCode but I'd have to investigate to see
if
there are reasons why "*" isn't allowed right now.
InstanceTransforms always require me to go back and re-read the
documentation.
On Fri, Sep 2, 2011 at 11:18 AM, Daniel Pratt
<colorblind...@gmail.com>wrote:
> I've authored an installation package (with WIX) that uses instance
> transforms to allow multiple installations of the package. Although
setting
> up the initial package was pretty easy, I found out too late that there
> seems to be very little guidance on how to *upgrade* existing instances
> when
> a new version comes along.
>
> Previous to dealing with multiple instances, I would've configured the
> installation package to perform a 'major upgrade' and not worried about
it
> further. Alas, it seems that major upgrades do not play nice with
multiple
> instances. Because all instances share the same upgrade code (so WIX
seems
> to enforce), installing a new version of the package results in *all* of
> the
> installed instances get uninstalled (rather than just the one I'm trying
to
> upgrade).
>
> What scant advice I could find on the matter led me to doing the
following:
> For new instances, I use a command line like this:
>
> msiexec.exe /i "Setup.msi" TRANSFORMS=:INSTANCE.10 MSINEWINSTANCE=1
*...*
>
> When upgrading an instance to a new version, I use a command line like
> this:
>
> msiexec.exe /i "Setup.msi" /n {58cabe0e-f0f7-494c-a9e9-2fe101419b10}
> REINSTALL=ALL REINSTALLMODE=vamus ...
>
> The above seems to work perfectly *most of the time*. Occasionally,
> however,
> certain files do not get updated as expected.
>
> I suspect the cause might be that I am breaking some upgrade rules when
> updating the installation package (that I wouldn't have had to worry
about
> when doing a major upgrade). One possible broken rule might be how I'm
> managing the product code. As I have done with other installation
packages,
> I set Product Id = "*" so the base product code changes for every new
> version. Of course, each instance transform specifies it's own product
> code,
> which is static (if it's possible to make it dynamic, the WIX docs don't
> say
> as much). 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?
>
> 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)?
>
>
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