When using VS Code, editing F# code with the Ionide extension (all up-to-date), if I get an error I can hover over the ‘squiggle’ to get a pop-up.
If I then click on the error code hyperlink at the end of the top line to see the Microsoft documentation, my browser opens but I get a “404 – Page not found” error, every single time no matter what the error code is.
Since the issue has been closed, and there’s not much I could have added to it anyway, I’ll just keep my fingers crossed that someone will add the necessary documentation at some point.