Wix Installer Upgrade without uninstall

Question

I'm currently using wix to build a installer, here are some requirements that I've no idea how to do it.

(installer of the same build or new build, but the same version) user can click the installer to reinstall the software without the need to uninstall it first.
while installation there are some configuration in the UI process, and the result has been written to a file in the installation folder, can we load these parameters from the file while reinstalling the software?

I've tried the
- same product id;
- modify the Product Version from "1.0.0" to "1.0.1"
in the wxs, and I've added with the same upgrade code in the , added RemoveExistingProducts Before="InstallInitialize"

in Installation sequence, but I still get "wix another version of this product is already installed" Error.

Please help.

    <Product  Id='fixed-ID' 
              UpgradeCode='fixed-upgrade-ID' 
              Version='1.1.1' > 
        <Package InstallerVersion='300'/>

            <Property Id="PREVIOUSVERSIONSINSTALLED" Secure="yes" />

            <Upgrade Id="fixed-upgrade-ID">
                <UpgradeVersion Property="PREVIOUSVERSIONSINSTALLED" 
                  Minimum="0.0.0" 
                  Maximum="1.1.1" 
                  IncludeMaximum="no" 
                  IncludeMinimum="yes"
                  OnlyDetect="no" 
                  />
            </Upgrade>

        <InstallExecuteSequence>

          <RemoveExistingProducts Before="InstallInitialize" />
       </InstallExecuteSequence>
    </Product>

TheESJ TheESJ · Accepted Answer · 2014-01-14T15:19:18

I recommend using the MajorUpgrade element that is present in the latest versions of WiX. It takes a lot of the complexity out of creating an installer that supports upgrade. You do need to make sure you change both Product-ID and Version. You'll always get an error if you don't change Product ID (unless you run the install with the REINSTALLMODE containing 'v', but that is a minor upgrade and restricts what you can do). Version must be changed to ensure you have a one way upgrade path, otherwise old installers could upgrade newer ones if they had the same version.

This how-to has a great walk-through.

Wix Installer Upgrade without uninstall

1 Answers