I have both Duplicati.WindowsService.exe and Duplicati.Server.exe
I have seen this before when a job is running, but not when nothing is running.
This system has had issues with Duplicati.Sever.exe holding on to virtual RAM, and eventually causing a blowout, so I was thinking about forcing Duplicati.Server.exe closed since there are no jobs running, but I thought I should check here first to see if this is normal.
The Service binary executable is a small helper program that simply runs the Server executable and restarts it if it exits. The purpose of this program is to assist in keeping the Server running, even in the face of errors. The Service binary is called Duplicati.Service.exe on Windows and duplicati-service on Linux and MacOS.