FreeFileSync Forum

I tried your suggestion and traced the problem to two file types, .mds & .mdf. If either of these two file types are in any folder that I'm synchronizing, it will fail.
As a temporary fix, I've added a filter to exclude these two types.

After running a synchronize, the program locks up. I've tried un-installing and re-installing it and closing my AV program. Nothing works. It stops at the same spot every time. (see Attachment)