title: How to modify IIS handler mapping permissions via Wix or a Custom Action
body: <p>I'm using Wix to create an installer for a Silverlight application.  </p>
  
  <p>When I install the application the virtual directory that has been created has the execute permission checked for the *.dll handler mapping (IIS 7 > Web site > VDir > Handler Mappings > *.dll > Edit Feature Permissions > Execute).</p>
  
  <p>When I browse to the application it cannot download its satellite assemblies in ClientBin.  If I uncheck the execute permission in IIS the handler becomes disabled and the application now works.</p>
  
  <p>I don't want to have to do this manually.  Does anybody know how to modify the handler mapping permissions in Wix or a Custom Action?</p>
  
  <p>Thanks</p>