In v9, you could check
Use Robocopy to copy files on the Remote tab to use Robocopy instead of CopyFileEx to copy files and see if it makes a difference.
http://www.kinook.com/VisBuildPro/Ma...obocopytab.htm
Otherwise, you could replace the Copy Files step with a Run Program action that calls xcopy or Robocopy.
https://technet.microsoft.com/en-us/.../cc733145.aspx
https://technet.microsoft.com/en-us/.../bb491035.aspx