Microsoft Intern Software Engineer interview questions

Initial phone screen with quick brain teaser question; on site interview scheduled a few weeks later with 4 rounds of standard whiteboard coding questions and a final interview with a project/hiring manager.

First round, white board. The interviewer asked me to stop talking and just write my code on the white board so I was a little discouraged then. I was recommended to go to final round, but I wasn't actually selected, or something went wrong on their end.