justsomeuser

Looks like SW has updated the program. I downloaded a fresh copy and installed on a fresh VM, it now includes the log4net.dll file and worked as expected for me.

I saw the same behavior. If you're using something like WinSCP it could be that it requires a shell, and doesn't work with cmd.exe. I tested using the scp command from a linux machine and it worked.

I have the same issue on a new install. Not sure if this is a workaround or a solution, but I downloaded log4net 2.0.12.0 from the apache archive, extracted the log4net.dll from the net45 folder, then placed that in the same folder as the SolarWinds SFTP exe. I was able to start the service after that.