It's a configuration issue, for some reason the default on the unraid app is setup to support Windows ACLs, but the default on the original docker image is not. Change the docker image settings: SMB_VFS_OBJECTS (SMB vfs objects): drop acl_xattr so the value should be fruit streams_xattr SMB_NFS_ACES (SMB fruit:nfs_aces): change it to no This made those errors go away for me.