===== Windows Installer =====
Con la utilidad msiexec podemos instalar o desintalar paquetes desde la consola 

=== Instalación ===
MSIEXEC /q /i XYZ.MSI Windows Installer command to silently install any MSI package

=== Desinstalar ===
MSIEXEC /q /x {package id} Windows Installer command to silently remove any MSI installation

<note>Para saber la cadena del programa a desinstalar hay que ir a **My Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\userdata\s-1-5-18\Products\xxxxxxxx** </note>

Ejemplo de desinstalación mediante script de las versiones antiguas de java
<code vb>
'Thanks to Matthew Hudson to share the script code.

Set objWshShell = WScript.CreateObject("WScript.Shell")

On Error Resume Next
' Java(TM) 6 Update 7 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0160070} /qn", 1, True

' Java(TM) 6 Update 2 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0160020} /qn", 1, True

' Java(TM) 6 Update 1 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0160010} /qn", 1, True

' Java(TM) 6 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0160000} /qn", 1, True

' J2SE Runtime Environment 5.0 Update 11 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0150110} /qn", 1, True

' J2SE Runtime Environment 5.0 Update 10 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0150100} /qn", 1, True

' J2SE Runtime Environment 5.0 Update 9 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0150090} /qn", 1, True

' J2SE Runtime Environment 5.0 Update 6 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0150060} /qn", 1, True

' J2SE Runtime Environment 5.0 Update 4 removal.
objWshShell.Run "msiexec /x {3248F0A8-6813-11D6-A77B-00B0D0150040} /qn", 1, True

wscript.quit 
</code>



==== Software para crear msi ===
  * installer2go ahora witem installer http://www.witemsoft.com/


==== conversor exe a MSI ====
  * http://www.qwertylab.com/FreeTools.aspx
  * http://wixtoolset.org/


==== Referencias ====
  * http://technet.microsoft.com/en-us/library/cc759262%28v=ws.10%29.aspx
  * http://social.technet.microsoft.com/Forums/systemcenter/en-US/4ae8cfab-6176-4816-8903-ebe0bc95757a/automated-software-uninstalling?forum=configmgrswdist