Scrutari I am not sure what exatly you mean by “Dropbox camera uploads”, but Tonfotos can identify and delete duplicates from all folders it is connected to. So if you add this folder to Tonfotos, it will scan it and idetify duplicates.

I successfully scanned the Dropbox folder with camera uploads (6000 photos). Unconnected with Tonfotos I had to restart my PC (Windows 11) and when it restarted the Tonfotos app would not open when I click the icon. I am a novice operator and am unclear what to do next. Thanks.

Scrutari First we need to identify the reason for that. Best way is to run it from the command line: https://community.tonfotos.com/d/26-making-debug-logs-in-tonfotos/2