Easiest way to do this is just use the DOS ' attrib' command from inside a DOS window - something like this: After many hours of frustration and digging online, the solution (for my situation) turned out to be this:ġ) Turn off all read-only flags on the files that are also Blocked. If it shows an 'Unblock' button near the bottom of the window, and maybe this message: 'Security: This file came from another computer and might be blocked to help protect this computer.', then you've got a Blocked file.) For me, this was under Win7 圆4 SP1. (To verify this for yourself, right-click any file that causes the Error Code 5 in FreeFileSync and select Properties, then click the General tab. In a quick nutshell, mine occurred when using FreeFileSync to copy several hundred files between 2 local hard-drives on my desktop computer - these files happened to *all* have a Block flag set.

My Error Code 5 issues (when using FreeFileSync) were from something completely different from other suggestions in this thread.

I realize I'm 3-4 years late to this thread, but I wanted to share this for anybody who might need the help.

Freefilesync windows 8