Microsoft came close with Midori but bailed out and canned the product just before it should have been released in alfa / beta 1
> Midori is an experimental managed code operating system that was in development until 2015. A joint effort by Microsoft and Microsoft Research, it had been reported to be a possible commercial implementation of the OS Singularity, a research project begun in 2003 to build a highly dependable OS whose kernel, device drivers, and application software would all be written in managed code. It was designed for concurrency, and would run a program spread across multiple nodes at once.[1]
Joe Duffy also did a few presentations, on one of them (too lazy to search for the exact moment), he mentions that even with Midori running in front of them, the Windows team was very sceptical of it,
"RustConf 2017 - Closing Keynote: Safe Systems Software and the Future of Computing by Joe Duffy"
> Midori is an experimental managed code operating system that was in development until 2015. A joint effort by Microsoft and Microsoft Research, it had been reported to be a possible commercial implementation of the OS Singularity, a research project begun in 2003 to build a highly dependable OS whose kernel, device drivers, and application software would all be written in managed code. It was designed for concurrency, and would run a program spread across multiple nodes at once.[1]
[1] https://en.wikipedia.org/wiki/Midori_(operating_system)
https://joeduffyblog.com/2015/11/03/blogging-about-midori/