title: WiX compatibility with Windows Installer versions (schemas)
body: <p>What are the minimum <a href="http://en.wikipedia.org/wiki/Windows_Installer#Versions" rel="nofollow noreferrer">version requirements for Windows Installer</a> ("Schema" version?) version that WiX imposes in the created setup databases?</p>
  
  <p>I.e. for the following versions of WiX, what (database "Schema") version of Windows Installer is the minimum requirement on the target system?</p>
  
  <ul>
  <li>WiX 2.0</li>
  <li>WiX 3.0</li>
  <li>WiX 3.5</li>
  <li>WiX 3.6</li>
  <li>WiX 3.7</li>
  <li>WiX 3.8</li>
  </ul>
  
  <p>NB: What I am referring to is, I think, called "Schema" in the "Summary Information" for a setup database:</p>
  
  <p><img src="https://i.stack.imgur.com/FR6hN.png" alt="The field that governs compatibility of an MSI with Windows Installer"></p>