Error when username == hostname

[Luke Kenneth Casson Leighton]

> German: "Die angegebene Referenz passt nicht zur Referenzmenge". (could
> be "the reference does not meet the reference set").

credentials.  this is the "the user's credentials conflict with existing
(cached) credentials" problem, which you can get even between nt to nt.

disconnect the share (net use \\share\sharename /del) and reconnect.