What are the nuances when connecting to l2TP IPSec with Win10?

Question

VPN

A completely noob question, but still the
context is this - there was a need to connect with Win10 to a working VPN and it does not work at point-blank range. I stumble upon a 789 or 809 error. On Mikrotik, there are no problems with the same credenshils (no, I don’t try at the same time)
Google, quite unsuccessfully searched up to the 5th page of results, but there is a suspicion that I’m completely stupid somewhere

Answer 1

talking about a key in the registry