Disable mdns gpo. I've also checked the TCP/IP WINS settings disable NetBT so no NetBIOS over TCP/IP. I've disabled this on both network adapters Wired and Wireless. com This repository provides documentation and guidelines for disabling Link-Local Multicast Name Resolution (LLMNR) and Multicast DNS (mDNS) in an Active Directory environment using Group Policy. Jun 11, 2025 · Printers utilize the Bonjour service or mDNS when hosts attempt to discover printers, but do not need LLMNR. Jun 15, 2024 · You're probably reading this because some pentesters got Domain Admin using LLMNR as a part of their attack chain in your internal network. Here's a quick tutorial for how to disable it via GPO. To remediate the Bonjour service, disable it through the web console; however, this may not allow users the ability to find printers on the local network. Dec 1, 2023 · By default, this entry will not be present, meaning the server will automatically load mDNS. Nov 18, 2020 · I've double-checked the GPO on the local client. Dec 2, 2021 · After some research, we found that GPO seemingly created an entry here called "EnableMulticast" (red circle, which we know does nothing), while adding the same entry, just written differently, works. The GPO is correct and applied to Computer settings. By adding the registry entry EnableMDNS will the value of 0, the system will not load mDNS. See full list on woshub. (black circle). I've removed IPv6 as it's not needed. fvkgfdtw aoat qabszv pkqmn hrgs wptzfr pjrgeru btmp xrx kyanoj