Windows has a feature called change notifications which can inform a particular program when files in a particular directory tree are changed, such as by editing. I believe that Dropbox uses this feature to trigger synchronization.

Is there a tool that can make use of this feature by copying changed files in any specified directory to any specific destination directory instantly when they have been changed?

All the usual backup tools, such as Dropbox, Windows File History, and commercial backup programs do not work exactly like this.

  • If the windows change notifier can really call any program, why not learn a little bit of batch file scripting or whatever windows supports (I'm a linux guy /bin/bash forever!) and write a simple script. – ivanivan Jun 29 '19 at 3:16
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    Information on using PowerShell to track directory changes is at mcpmag.com/articles/2015/09/24/… . I will answer here if I have time to create a tool that works. – David Spector Jul 8 '19 at 16:07

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