FreeFileSync Forum

You might find it easier to simply write a batch script that runs the FFS sync and then runs the shutdown command after that finishes. Name it whatever, but it would contain two lines:
"C:\Program Files\FreeFileSync\FreeFileSync.exe" "C:\Path\To\Your\FFS\Config\File"
and
shutdown -s -t 0

Name ...

Sorry for reviving this old post but, for the life of me, I just can't figure out how to use the Startup/Shutdown Scripts to make it work. I just added the FFS executable to the script name section and under parameters I added the location of the .ffs_batch file but it does not work.