When attempting to diagnose why a specific target cannot be scanned, we can query the database to discover the results of connection attempts for that target. It is useful to filter on connection date as well as IP address if the target has had multiple scan attempts.
Connection Results per IP address
SELECT ch.IPAddress
, o.Name as Outcome
, p.Name as Protocol
, ch.Port
, Message
, convert(date,ch.AttemptDate) as DateAttempted
FROM history.t_ConnectionHistory ch
INNER JOIN config.t_Outcome o ON o.OutcomeID = ch.OutcomeID
INNER JOIN config.t_Protocol p ON ch.ProtocolID = p.ProtocolID
WHERE
-- == Customize These == --
IPAddress ='192.168.0.1'
AND
CONVERT(date,ch.AttemptDate)='YYYY-MM-DD'