Error Msg 4861 when execute bulk insert

Hi,

I am trying to make a bulk insert by mapping a file that is on a different machine than where the database is. The code is the following

bulk insert vector.changes_date
from '\\server14c.deep.on\shared\dates.csv'
with (format='CSV')

The error is as follows.

Error  Msg 4861, Level 16, State 1, Line 2
Cannot bulk load because the file "\\server14c.deep.on\shared\dates.csv" could not be opened. Operating system error code 1385(Logon failure: the user has not been granted the requested logon type at this computer.).

Thanks in advanced