Disable SSDP Discovery in Windows Messenger (Windows 2000/XP)

Registry Guide for Windows
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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Disable SSDP Discovery in Windows Messenger (Windows 2000/XP)
Category: Home > Software > Windows Messenger

This tweak can be easily applied using WinGuides Tweak Manager.
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Windows Messenger uses the Simple Service Discovery Protocol (SSDP) to attempt to locate upstream Internet gateways on UDP port 1900. This tweak allows you to disable Universal Plug and Play Network Address Translation discovery to reduce bandwidth and increase security.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'UPnPMode' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.


(Default)	REG_SZ	(value not set)
UPnPMode	REG_DWORD	0x00000002 (2)


	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectPlayNATHelp\DPNHUPnP

Settings:

System Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DirectPlayNATHelp\DPNHUPnP]
Name: UPnPMode
Type: REG_DWORD (DWORD Value)
Value: (2 = disable UPnP broadcasts)

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last Modified: December 19, 2002

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