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]