Tidsprøven blev afvist, fordi peer'en ikke er synkroniseret, eller den ikke kan nås i en eller begge retninger. Dette kan også betyde, at denne peer fejlagtigt har sendt en NTP-anmodning i stedet for et NTP-svar.

The time sample was rejected because: The peer is not synchronized, or reachability has been lost in one, or both, directions. This may also indicate that the peer has incorrectly sent an NTP request instead of an NTP response.