I want to run a saved backup script automatically when I attach a USB disk using autorun function of my USB manager

Can this be done without the need to respond to my default UAC prompt ??

Thanks

Reflect requires elevated privileges to do what it does. The only way I’ve found to “pre-authorize” elevation is to use a scheduled task. You could create a scheduled task with a one-time execution occurrence in the past just to have it available to be called via manual invocation, and then configure some application to call that scheduled task when you connect a USB disk.