Robocopy is preinstalled with Windows 7. I've used it many times in the past. I tried to copy a folder to a remote share with

robocopy c:\source "\\server\share\path" /s /r:2 /w:2` 

As a result I get permission denied. Using explorer I can copy files to this share. I've opened a command prompt with administrator permissions with the same result. The share is read/write for public.

[EDIT] I've successfully mapped a driveletter to the share, but robocopy still fails

EDIT I've added the /B switch without success. The exact error is:

2009/09/26 20:43:14 ERROR 5 (0x00000005) Accessing Destination Directory \drobo \Drobo\fotos__NEW\Ericsson\