All of a sudden, out of nowhere, not one of my macs can access the NAS. It will not back up. It gives me a cryptic red exclamation point and the words “no access rights” I haven’t changed a thing, not ONE setting. The only thing I have done is shut down my machine. I’m not an expert, but I do know that shutting down a computer does not change the access rights. This NAS is obviously useless if it will not back up after a shutdown and restart of my own computer. Any ideas? All I want to do is back up three computers to one central network location. It seems WD is not the answer.