How do NTFS permissions differ from SMB share permissions?

NTFS permissions apply to files and folders on an NTFS volume, including local access. Share permissions govern access through a particular network share. For access through that share, both layers constrain the result; evaluate the rights granted by each and relevant denies rather than inspecting only one dialog. Local access does not pass through share permissions. Inheritance, group membership, and explicit entries also matter. Check the intended user’s effective access and the actual path instead of solving a permission issue by granting broad access to everyone.