Run "netstat -nob" in a admin prompt and you will see what I mean.

I block all those apps now with Windows firewall except firefox, chrome and Windows defender.

Also you can check out the default windows firewall config and see how many out going connections are allowed AND CONNECTED by default.

I always configure my system network security by default disable ALL and only selected app/ports are allow connect to internet.

Win10 firewall is completely opposite - its default configure for outgoing are "Allow ALL".