I had the same problem.
I have configured my internet cable router Firewall to unblock every port for this machine.
I have switch user to : administrator
Now it is working !!!
The other user had admin right but maybe windows did not like the name...
I don't think the firewall was the problem because I did many installation update without having to unblock the port...
The only think I see is that it was the first time I use this use Name, the user was "Famille"
Maybe I was just lucky but no problem on administrator user...
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