I have an XP Pro machine with a folder shared to the network with full control for everyone. Every other machine on the LAN, regardless of Windows version or user account level, has no problem reading/writing on this share. The share resides on an NTFS drive. There is no domain. I have install Vista on three computers (two x86, one x64) and have had the exact same problem on all three: the Vista machines can access the above network share, open files on it, and write to it as expected. The problem is with copying a file from that share to a local NTFS volume. I can copy it to a local FAT32 volume no problem since that strips the NTFS data from the file. I can then copy it from the FAT32 drive to the NTFS drive. Attempting to copy a file from the network directly to the local NTFS disk results in an error message reading "Destination Folder Access Denied: You need Permission to Perform this Action, Try again/Cancel". I don't get a UAC elevation prompt. However, if I create a file on the shared folder from the Vista computer, I can copy it back to the Vista computer. Its like there's something in the NTFS data of the files created on XP that Vista won't copy onto its own NTFS volume. Things I've tried with NO effect: 1) Disabled UAC 2) Logged on as an administrator 3) Logged on as a regular user 4) Enabled THE administrator and logging on as such 5) Changed where I'm copying the file to (ie. Desktop, Documents, etc) 6) Created new folder on C and verified that everyone and their brother has full control of it before attempting to copy a file to it from the network The only variable I've found that has any effect on the issue is the file system of either the network share or the local disk. If either one is FAT32, file copying work. If both are NTFS, it fails.