Registry Guide for Windows

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

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(Windows XP)
Windows XP includes support for Universal Plug and Play (UnPnP) which allows UnPnP devices to be connected over a network. There are currently limited UnPnP devices available and due to a recent security flaw it may be advisable to disable these services.

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Disable Universal Plug and Play Device Host
Open your registry and find the key [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\upnphost]. Set the value of "Start" to "4" to disable the service, or "3" to enable it.

Disable UnPnP Discovery Service
Open your registry and find the key [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SSDPSRV]. Set the value of "Start" to "4" to disable the service, or "3" to enable it.

Restart Windows for the change to take effect.


(Default)	REG_SZ	(value not set)
Start	REG_DWORD	0x00000004 (4)


	HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\upnphos...

Registry Settings

System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\upnphost]
Value Name: Start
Data Type: REG_DWORD (DWORD Value)
Value Data: (3 = enabled, 4 = disabled)

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: June 21, 2003