Oddly, I had the exact opposite experience interviewing at Microsoft.

I blazed through all the questions the manager asked, and the manager told me I was the most talented person he'd ever interviewed and would definitely get the job, and then I didn't get the job, and got no further feedback. It was the most confusing interview process I'd ever been in.

I sent him to ask him if there was some sort of mistake, and he didn't even reply directly, just sent me back a message through the recruiter saying no, it wasn't a mistake.