The following 3 steps were performed on both the client machine that mapped the share and
the server hosting the NTFS share.
- Check that windows User Access Control (UAC) is enabled.
The exact procedure will vary between different versions of Windows but any level of UAC access should suffice (essentially UAC should not be disabled).
- Check the "Create Symbolic Links Privilege" is enabled as described in this Knowledge Base article:
- Check that bi-directional remote symlinks are enabled.
After following the above 3 steps to enable UAC and symlink privileges it was then possible to successfully sync the symlinks.