I saw this come up in another thread from a year ago but no resolution.. so I was hoping someone has figured it out now. When I try to mount a SMB share from my homemade Windows NAS, no matter what username/password I use (administrator, local user, AD user, with or without domain name) it won't mount saying invalid username and password. I am, however, able to mount shares from another OpenELEC box elsewhere in the house. I've verified SMBv1 is enabled on the NAS and made sure everyone has full control of the shares, yet always invalid username or password. Strange thing, every one in ten times I try it, it'll say "connecting..." forever. I check the event viewer on the NAS and there is a constant "login success" then immediately "log out" over and over from the Shield. Any ideas?
Which version of Windows are you running? 2012r2 and newer have issues requiring disabling some security features.
https://forums.geforce.com/default/topic/948147/shield-tv/mount-windows-server-2012-r2-share-issues/