What does the "Disable UPnP/SSDP" tweak change in Windows?

It sets the SSDPSRV, upnphost services to Disabled. The full list is in the table on this page, read from the app's source.

Is "Disable UPnP/SSDP" safe to switch on?

Safe on most PCs. If casting or network devices disappear, switch it back. The main cost: Network discovery of media devices and casting can stop working.

Is "Disable UPnP/SSDP" free in Frozen Tweaks?

It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

Disable SSDP Discovery (SSDPSRV) and UPnP Device Host (upnphost)

Frost LIVENetworkProUndo: YesUpdated Oct 8, 2026View as Markdown

Short answer

Updated Oct 8, 2026

SSDPSRV finds UPnP devices on your network, such as media players and printers, and upnphost lets this PC offer UPnP devices to others. This tweak sets both to Disabled. It sets the SSDPSRV, upnphost services to Disabled.

In the app

Disable UPnP/SSDPPRO

Service

SSDPSRV SSDP Discovery

Startup typeManualDisabled

What the switch writes. Your current value may differ. 1 more change below.

What it does

SSDPSRV finds UPnP devices on your network, such as media players and printers, and upnphost lets this PC offer UPnP devices to others. This tweak sets both to Disabled.

In the app the switch is called "Disable UPnP/SSDP", described there as: Stops discovery chatter & multicast traffic (SSDP/UPnP).

When it helps, and when it hurts

When it helps

Less multicast discovery traffic on the local network, and a slightly smaller attack surface.

When it hurts

Network discovery of media devices and casting can stop working.
It does not change your router's UPnP port forwarding, which games use for an open NAT. That happens on the router.

What it writes

Exactly what the switch changes, read from the app's source. Switching it off is what the app writes when you turn the tweak off again.

Windows services the switch changes: their startup type.
Service	With the tweak	Switching it off
SSDPSRVSSDP Discovery	Disabled	Manual
upnphostUPnP Device Host	Disabled	Manual

From the app's source (network_upnp_off.hpp), app 2.0.0, checked Oct 8, 2026.

The same change by hand

You do not need the app for this one. These commands make the changes from the table above. Run them in a Command Prompt opened as administrator, and make a restore point first.

Make the change · CMD

sc config "SSDPSRV" start= disabled
sc config "upnphost" start= disabled

Put it back · CMD

sc config "SSDPSRV" start= demand
sc config "upnphost" start= demand

How to undo it

In the app: Yes

Switching it off sets a standard Windows value, which may not be exactly how you had it.

Switch the tweak off in Frozen Tweaks. It sets SSDPSRV to Manual, upnphost to Manual.

Changing several settings at once? The app's Make a restore point button, on every plan, makes a Windows restore point before you start.

Verdict

Safe on most PCs. If casting or network devices disappear, switch it back.

Questions

What does the "Disable UPnP/SSDP" tweak change in Windows?: It sets the SSDPSRV, upnphost services to Disabled. The full list is in the table on this page, read from the app's source.
Is "Disable UPnP/SSDP" safe to switch on?: Safe on most PCs. If casting or network devices disappear, switch it back. The main cost: Network discovery of media devices and casting can stop working.
How do I undo it?: Switch the tweak off in Frozen Tweaks. Switching it off sets a standard Windows value, which may not be exactly how you had it.
Is "Disable UPnP/SSDP" free in Frozen Tweaks?: It is part of Frozen Pro and Elite. You can also make the change by hand with the values on this page.

In the app