Youtube block works for 1 PC but not working for other pc

RouterOS Beginner Basics
1

Hi All,

please help with your advice,
YTblock picture.PNG
i am able to block youtube for the blue circled pc with this firewall rule

add action=drop chain=forward comment=“Drop youtube from Desktop QUNO”
disabled=yes layer7-protocol=youtube src-address=192.168.8.100

but the block doesn’t work for the red circled pc with the same firewall rule,.

add action=drop chain=forward comment=“Drop youtube from Desktop DEHD”
disabled=yes layer7-protocol=youtube src-address=192.168.0.242

i changed the src address only, the rule is the same.

can anyone advise what is lacking here?
i’ve attached my full config file
thank you
ytblock.rsc (10.9 KB)

2

Probably the other computer have TLS 1.3+ compatible browser, or use QUIK Protocol, and you can not longer spy the connection.

3

i don’t think it’s the browsers, these 2 uses the same version of chrome browser