Microsoft Developer interview questions

HR called me. Since I was local, instead of phone screen, she arranged me to come on site. Talked to 2 hiring group leads. One proceeded for a real onsite interview. The onsite interview took almost 2 weeks to schedule (by someone else). I was supposed to meet 3 people. The person I was supposed to meet at the reception desk didn't come. I talked the 2 who came to meet me. Both super nice. We talked for ~15 minutes, then I was given a problem to think about. An hour later, two of them came and asked if I had any questions. After lunch, discussed my solution/ideas with them separately. They both seemed like my ideas (two of which they haven't thought of). Seems all went exceedingly well so far. Then 3 1-1 interview with white board coding. I didn't do well on any of them. 2 weeks later, after I contacted the HR, and was given a schedule when I could talk to her. She told me NO.

2 rounds of telephonic interviews. Mainly concentrated on problem solving and programming ability. They called to campus after 4 weeks. Nearly 5 rounds of interviews with different senior people focusing on designing and architecture.