(Before this post we already had an e-mail conversation where I pointed narenbv at my article “Installation Phases and In-Script Execution Options for Custom Actions in Windows Installer” at http://www.installsi...00108/index.htm
For a rollback custom action:
msidbCustomActionTypeInScript + msidbCustomActionTypeRollback
Hexadecimal: 0x00000400 + 0x00000100
Note: This is in the Windows Installer documentation at http://msdn2.microso...y/aa368069.aspx
InstallExecute sequence between InstallInitialize and InstallFinalize.
Note: this is mentioned in my article and also in Windows Installer documentation.
Condition: same as the custom action which you want to undo.
Note: this is mentioned in my article.