Forcing reinstallation when necessary

Question

Fact
It's possible remove previous version and install newer with WiX using something like this:

<MajorUpgrade Schedule="afterInstallInitialize"
  DowngradeErrorMessage="A later version is already installed."/>

Complication
With same valid version (Example 1.0.0.0 and 1.0.0.1, the 4th part it's not considered as a diferent version) the program don't uninstall the previous version.

Question Goal
How force program reinstall the same valid version. I mean, uninstall the previous application first and then install current version in msi file?

Answer 1

If you use the AllowSameVersionUpgrades attribute your installer will perform an upgrade when only the revision has changed.

<MajorUpgrade
  Schedule="afterInstallInitialize"
  AllowSameVersionUpgrades="yes" 
  DowngradeErrorMessage="A later version is already installed."/>