This is a surprisingly negative take, you should look a little further. Microsoft Research has done an incredible amount of high quality research. I've mostly read papers from them on programming languages, they have or did employ leading researchers behind C#, F#, Typescript (of course), as well as Haskell (Simon Peyton Jones and Simon Marlow spent a long time there), F*, and Lean (built by Leonardo de Moura while at MSR). MSR's scope has been much broader than just languages, of course.
I've heard in interviews that MSR's culture is not what it used to be (like Bell Labs, maybe), but over time they've funded a ton of highly influential research.
You could look at their blog: https://www.microsoft.com/en-us/research/blog/
Or their list of publications: https://www.microsoft.com/en-us/research/publications/
Here's a (no longer updated, apparently) list of awards given to researchers at Microsoft: https://www.microsoft.com/en-us/research/awards-archive/
I've heard in interviews that MSR's culture is not what it used to be (like Bell Labs, maybe), but over time they've funded a ton of highly influential research.