Windows 10 firewall blocking finding Add Printer or Scanner.

No printers found when clicking "Add Printer or Scanner". 

Try disable Windows 10 firewall, is it found? if yes and you want to keep firewall on then create these rules:

1. Open windows firewall.

2. create two rules (UDP and TCP)

3. Program %SystemRoot%\System32\dasHost.exe

4. Allow

TCP rule

enable following ports:

80, (to find brother printer)

3911 (to find HP printer)

Other ports you may need for your printer: 5357, 631

Remote IP's 

192.168.1.0/24 (local subnet)

(you could lock this to your printer IP instead)

UDP rule

3702 (to find brother and HP)

Other ports you may need for your printer:

3289, 10004, 22222, 

Scope:

Remote IP

239.255.255.250 (UPNP, device discovery)

Other IP's you may need for your printer:

255.255.255.255

192.168.1.0/24 (local subnet)