"Windows Sockets version 2 API error code documentation in MSDN" should point to the information. Now I'll have to google it.
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Here it is, the text is wrong. It's not in MSDN.
https://docs.microsoft.com/en-us/windows/desktop/winsock/windows-sockets-error-codes-2
A note for whoever fixes this: the same phrase is used in 4/5 different API doc files. That's more than I can fix in the browser, I'm afraid! 😄
Thanks @ChrisMaddock. I'll take care of this.