Max Trinidad has a public service announcement for us:
Have you installed any of the .NET Tools? Such as “.NET Interactive” and “PowerShell Global“, then you’ll need to remember, to update these tools manually.
These tools give you the ability to use create Jupyter Notebook using Python Kernel but also with C#, F#, and PowerShell 7 kernels.
Read on to see how to check if you need to update either of these.