Is "Block Firmware Software Injection" safe to switch on?

Recommended on self-built PCs where the board keeps pushing its software. The main cost: Anti-theft software that is delivered this way on some laptops no longer installs itself.

Switch the tweak off in Frozen Tweaks. Switching it off puts back exactly what was there before, value for value.

Does it need a restart?

Yes, the change applies after a restart.

Is "Block Firmware Software Injection" 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.

DisableWpbtExecution: stop motherboard firmware from installing software in Windows

Frost LIVEBIOSProUndo: YesUpdated Oct 8, 2026View as Markdown

Short answer

Updated Oct 8, 2026

WPBT is a table in the motherboard firmware that lets the manufacturer make Windows run a program at every boot. Vendors use it to install their utility and updater software, even on a clean Windows install. DisableWpbtExecution set to 1 tells Windows to ignore the table. In the registry it sets DisableWpbtExecution to 1 under HKLM\SYSTEM\CurrentControlSet\Control\Session Manager.

In the app

Block Firmware Software InjectionPRO

Registry

HKLMSYSTEM\CurrentControlSet\Control\Session Manager

DisableWpbtExecutionYour previous value1

What the switch writes. Your current value may differ.

What it does

In the app the switch is called "Block Firmware Software Injection", described there as: Stops motherboard firmware from installing vendor software into Windows at boot through WPBT (reboot).

When it helps, and when it hurts

When it helps

Stopping vendor software such as Armoury Crate style installers from coming back after you remove it or reinstall Windows.

When it hurts

Anti-theft software that is delivered this way on some laptops no longer installs itself.
It needs a restart, and it does not remove software that is already installed.

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.

Registry values the switch writes.
Key and value	With the tweak	Switching it off
HKLMSYSTEM\CurrentControlSet\Control\Session ManagerDisableWpbtExecution	1	Your previous valueSaved before the change, or deleted if there was none.

From the app's source (pack_extra.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

reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v "DisableWpbtExecution" /t REG_DWORD /d 1 /f

See what it is set to now · CMD

reg query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v "DisableWpbtExecution"

How to undo it

In the app: Yes

Switching it off puts back exactly what was there before, value for value.

Switch the tweak off in Frozen Tweaks. The app saved what each value was before the change and writes exactly that back, or removes the value if it did not exist.

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

Recommended on self-built PCs where the board keeps pushing its software.

Questions

What does the "Block Firmware Software Injection" tweak change in Windows?: In the registry it sets DisableWpbtExecution to 1 under HKLM\SYSTEM\CurrentControlSet\Control\Session Manager.
Is "Block Firmware Software Injection" safe to switch on?: Recommended on self-built PCs where the board keeps pushing its software. The main cost: Anti-theft software that is delivered this way on some laptops no longer installs itself.
How do I undo it?: Switch the tweak off in Frozen Tweaks. Switching it off puts back exactly what was there before, value for value.
Does it need a restart?: Yes, the change applies after a restart.
Is "Block Firmware Software Injection" 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