Block MultiCast from the Build-in Firewall (Windows10 & More!)

This simple command might save you some time and increase your security if you want to block MultiCast traffic.

It sometimes happens that some device connected to your network, like a phone, PC, TVs are sending way more announce packages than needed.

It’s mostly used for example devices such as ChromeCast, MiraCast, TVs and computers too. They send this
kind of traffic to let every other device in the same network to let them know they exist.
And maybe you don’t use that feature at all. Then it’s really unnecessary.
So, what’s it used for? It short it’s a protocol made for LANs and VLANs and such.

It will add all the rules you need and apply it for the all profiles in the Windows Firewall. (Private, Domain, Public).

Block MultiCast/BroadCast from your Windows PC from CMD.exe or PowerShell.
Start CMD.exe or PowerShell by right-clicking on it and choose “Run as administrator.
Once one of those applications above loads up. Run this command.

Netsh advfirewall set allprofiles settings unicastresponsetomulticast disable

It should work the most newer versions of Windows. Windows 10 is a given but I think it might work with Windows 7 and all the way up to Windows 10.

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