When I assign a user to a nas it says and access it in windows explorer \\172.16.0.2\file-depo is not accessible. You might not have permission to use the network resource. blah blah blah

When i remove the user it allows me to access it. I know my password is good because I have the FTP option selected and it lets me login through FTP.
So anybody know what I missed when I try to login using windows?

Any help is appreciated
TIA