If disabling this breaks stuff, try to un-disable it and fix what broke. In my opinion, this is legacy protocol and presents enough risk that you are better to make whatever breaks work without LLMNR enabled. Disable LLMNR with Active Directory GPO: Active Directory has a GPO you can configure to prevent its domain workstations from using LLMNR.

Dec 18, 2014 Security guidelines for system services in Windows Server Discovers networked devices and services that use the SSDP discovery protocol, such as UPnP devices. Also announces SSDP devices and services running on the local computer. If this service is stopped, SSDP-based devices will not be discovered. If this service is disabled, any services that explicitly depend on it will fail to start. Installation Sam's Information: Disable SSDP traffic within Google Chrome May 01, 2018 Windows 10, Delivery Optimization, SSDP and blocking

Dec 04, 2013

SSDP Discovery is unable to start, if at least one of the following services is stopped or disabled: HTTP Service; Network Store Interface Service; If SSDP Discovery is stopped, the UPnP Device Host service fails to start and initialize. Restore Default Startup Type for SSDP Discovery Automated Restore. 1. Disable Windows Messenger broadcasts on UDP port 1900

SSDP Discovery - Windows 10 Service - batcmd.com

SSDP Discovery | Windows security encyclopedia The SSDP Discovery (SSDPSRV) service discovers networks devices and services that use the simple service discovery protocol (SSDP), such as Universal Plug and Play (UPnP) devices. For example, the UPnP Device Host service uses SSDP to locate and identify UPnP-certified network devices and service. The SSDP Discovery service also announces SSDP devices and services that are SSDP - The Wireshark Wiki