title: Wix Installer: Error 1925 when using silent installer
body: <p>In my wix setup, I use InstallScope="perMachine". In the interactive setup, there is no problem and it installs my application perfectly. However, when I try to install it from command line using /qn, I get the following error.</p>
  
  <pre><code>MSI (s) (60:EC) [11:51:05:268]: Product: ClickShare Launcher -- Error 1925. You do not have sufficient privileges to complete this installation for all users of the machine. Log on as administrator and then retry this installation.
  </code></pre>
  
  <p>Could anyone tell me why it gives such problem only in silent installation? Does command line have different user privileges? 
  Can I somehow detect if the user has required privileges and install the application perUser instead of perMachine? Would this be a solution?</p>
  
  <p>Thanks.</p>