I attended for a two-day on-site interviews for two different groups. The first day interview went very well. The second day was okay (I did not get offer from this team, which is very obvous) The very first thing I want to mention about the microsoft interview process is that all the employees who interviewed me are very down to earth candidates. Almost at all times, they were either trying to help me or asking some plain questions.. there is no show off of their knowledge. I felt very relieved compared to my previous experience at other companies like Google, Amazon etc. All the interviewers are very friendly, they did not make any facial expressions or anything like that.. which made me feel that this is the place I should be working at. During the on-site interviews the candidate is scheduled for a definite three 1:1 interviews, if the candidate is good enough then more interviews will be conducted and finally you will happen to meet the hiring manager. All the questions I was asked are data strucure related problem solving questions and simple test cases. Writing code on white board is bit tough for anyone, but practice makes you perfect. They are no longer asking any puzzles :).