Cannot connect to MyDSN : OLE exception from "Microsoft OLE DB Provider for ODBC Drivers" :

[Microsoft][ODBC SQL Server Driver][SQL Server]Login failed for user '(null)'. Reason: Not associated with a trusted SQL Server connection.

Win32::OLE(0.1502) error 0x80004005: "Unspecified error"
    in METHOD/PROPERTYGET "Open" at adodb.pl line 12.