[Setup]: ChangesAssociations

Valid values:

Default value:

no
Description:

When set to yes or to a boolean expression evaluating to True, Setup will tell Explorer to refresh its file associations information at the end of the installation, and Uninstall will do the same at the end of uninstallation.

If your installation creates a file association but doesn't have ChangesAssociations set to yes, the correct icon for the file type likely won't be displayed until the user logs off or restarts the computer.