If the DV Lottery winner is accepted for further processing, will be sent the visa notification (Second Letter) 4-6 weeks prior to the interview. On the day of the interview the applicant will face the interview after paying the required visa fees. The consulate officer will decide to issue or not to issue visa after checking all the documents and other departments approval.
If the visa is temporarily refused there are two reasons.
1. You need to submit more docoments as requested. You can contact the consular office as instructed to you, to submit the required documents.
2. Under administrative processing means you have to wait and don't contact the consular office. They are waiting clearances from other departments too. The time period for this processing can't be given by the consular office. Once it is done they will contact you personally.
VISA REFUSED, VISA REFUSAL REASON