title: WiX: how to install created patch in REINSTALL=ALL by default?
body: <p>I have generated a patch.msp file using wix tools and the when I install it via command line using the following command, all components of my app get updated.</p>
  
  <p><strong>Install patch.msp file via command line works perfect!</strong></p>
  
  <pre><code>msiexec.exe /p patch.msp /l*vx patch.log /qb REINSTALL=ALL REINSTALLMODE=omusa
  </code></pre>
  
  <p>but when a user installs the patch.msp file using Windows Explore (basically double clicking on the file). it installs fine (NO Errors generated, also get displayed in Installed Updates) but my dlls and .exe files <strong>do not get updated.</strong></p>
  
  <p>so how can i make this install with <code>REINSTALL=ALL</code>? is there a command i can add to the patch.wxs file?</p>
  
  <p>thanks in advance</p>
  
  <p><strong>Edit</strong></p>
  
  <pre><code>&lt;CustomAction Id="PatchInstall" Property="PATCH" Value="REINSTALL" /&gt;
  &lt;InstallExecuteSequence&gt;
    &lt;Custom Action="PatchInstall" Before="InstallInitialize"&gt;REINSTALL="ALL"&lt;/Custom&gt;
  &lt;/InstallExecuteSequence&gt;
  </code></pre>
  
  <p><strong>Update on this - 2012/09/27</strong></p>
  
  <p>The suggested method did not work but the problem with my solution is the file version did not change therefore the installer displays warning message advising that files have not changed. i found this in the log when installing the patch:</p>
  
  <pre><code>MSI (s) (48:F4) [17:32:34:025]: File: C:\Muzi_Test_Installer\ACME.dll;  Won't Overwrite;    Won't patch;    Existing file is of an equal version
  </code></pre>
  
  <p>so i'm going to update the file version and re-run the test.</p>
  
  <p><strong>Final Update</strong>
  okay just to confirm this was a file versioning issue! just by updating the file version the MSP installs fine with no problem.</p>