Rollback in Windows Installer is supported as part of an install transaction.
The install transaction occurs between the actions InstallInitialize and InstallFinalize. The term "rollback" is used here in a sense consistent with database transactions <http://en.wikipedia.org/wiki/Rollback_(data_management)>. What you are asking for is downgrade, as in the opposite of upgrade. Windows Installer supports upgrading of applications. Within the install transaction for an upgrade installation, if an error occurs, the install transaction can rollback to the previous version. No, Windows Installer does not support downgrade operations. You should uninstall the upgraded product and re-install the older version if you want to downgrade. -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com> ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ WiX-users mailing list WiX-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wix-users
