I have similar question: xcopy copied incompelete,does not copy all files, some directory and file lose.

I know some reason may cause that: 1.directory character string too long ,but it's no more than 100 for mine; 2.hide directory default not execute copy , unless use /H. I use this params and it's not hide directory. 3.I have checked directory permission

So I was very curious about why.

Some feelings: xcopy has no question log, I have no idea what's going on, why can't he handle it.

finnally:

I use robocopy instead of xcopy