I was able to run Jupyter NB’s on a browser or within VS Code on Windows 11, and suddenly the R kernel started to crash.

I know it is not the complexity of the code (it crashes with rnorm(1), calling no additional packages). Otherwise R runs well, and I have not problem with Jupyter NB running a python kernel.

I have made sure the R path is there in system environmental variables.

On the same laptop, I have no issues with Ubuntu on WSL, which it probably is of little help, but at least it shows that I set things up consistently.