Advanced Installer's Updates Configuration Projects allow you to create an Updates Configuration File used by the Auto Updater tool. You can create an Updates Configuration project by selecting "Updates Configuration" in the New Project dialog.
The file resulted after building this project will be placed on a server and it will be used to inform the updater when a new update is available.
The Updates Configuration file on the server will be downloaded
and used by the Updater only if it's newer than the one on the target
machine. For example, if the Updates Configuration file is moved from
its original location on the server, the Updater will download a "404 -
Page not found" message. If you restore the file, it will be ignored
because it's older than the error message. In this case, the solution is
to modify the Updates Configuration file. This way it will be newer than
the error message downloaded on the target machine and it will be seen
by the Updater.