Microsoft Software Engineer(Internship) interview questions

Applied online and was then invited to an on campus interview. I answered the questions correctly, provided thorough explanations out loud, and gave multiple solutions and analyzed their space and time efficiency . Asked the recruiter about my performance at the end and recruiter told me I answered the questions well, that I had really cool projects, and that my former work experience was a plus. Told me I should expect to hear back soon. Got a generic rejection email a month later without ever moving onto the next round. Like... what ... I'm speechless. I'm very salty about all this .. saltier than a can of Campbell's soup ... so salty I put the ocean to shame. This is why I don't use windows computers anymore.

Got several referrals from friends who have interned with the company and had an on campus interview. Got offered an on site interview but didn't go because of a family situation.