windows firewall - minimum rules

run wf.msc as Administrator:

Always do backup: (right click the highlighted)

 By default Windows allow outgoing connection for all apps. Change it to block Outbound connection.
(right click the highlighted then choose Properties)

Click Inbound Rules, then select all rules, right click to select "Disable Rule". This block all incoming connection. Thus you may not be able to share files, printer to others.

Click Outbound Rules, select all rules, right click to select "Disable Rule".
You would need to enable back a few rules for minimum working networking.

To ping other pc. This is for ipv4 only, enable for ipv6 if needed:

To access other's file share:

For weather widget at lock screen to update: