Is "Disable Hypervisor (Hyper-V)" safe to switch on?

Real but small gains, with real costs. Only for a PC that is used for gaming and nothing that needs virtualization. The main cost: WSL 2, Docker Desktop, Windows Sandbox, Hyper-V machines and Android emulators that use Hyper-V stop working.

Does it need a restart?

Yes, the change applies after a restart.

Is "Disable Hypervisor (Hyper-V)" 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.

bcdedit hypervisorlaunchtype off: disabling the Hyper-V hypervisor for gaming

Frost LIVESecurityProUndo: YesUpdated Oct 8, 2026View as Markdown

Short answer

Updated Oct 8, 2026

When the Windows hypervisor is on, Windows itself runs as a virtual machine on top of it. That is what Memory Integrity, WSL 2, Windows Sandbox and Hyper-V need. hypervisorlaunchtype off stops the hypervisor from starting at boot. It runs bcdedit /set hypervisorlaunchtype off.

In the app

Disable Hypervisor (Hyper-V)PRO

Command

bcdedit /set hypervisorlaunchtype autobcdedit /set hypervisorlaunchtype off

What the switch writes. Your current value may differ.

What it does

In the app the switch is called "Disable Hypervisor (Hyper-V)", described there as: Sets hypervisorlaunchtype=Off to remove virtualization layer overhead (reboot).

When it helps, and when it hurts

When it helps

Processor-bound games on a PC where the hypervisor is running: removing that layer can recover a few percent.

When it hurts

WSL 2, Docker Desktop, Windows Sandbox, Hyper-V machines and Android emulators that use Hyper-V stop working.
Memory Integrity (VBS) cannot run without it, and Valorant on Windows 11 and some other anti-cheats expect those protections. Check your games first.

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.

With the tweak · CMD

bcdedit /set hypervisorlaunchtype off

Switching it off · CMD

bcdedit /set hypervisorlaunchtype auto

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

How to undo it

In the app: Yes

Switching it off sets the hypervisor to start automatically, the Windows default, even if you had it off before.

Switch the tweak off in Frozen Tweaks. It runs the commands shown under "Switching it off".

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

Real but small gains, with real costs. Only for a PC that is used for gaming and nothing that needs virtualization.

Questions

What does the "Disable Hypervisor (Hyper-V)" tweak change in Windows?: It runs bcdedit /set hypervisorlaunchtype off.
Is "Disable Hypervisor (Hyper-V)" safe to switch on?: Real but small gains, with real costs. Only for a PC that is used for gaming and nothing that needs virtualization. The main cost: WSL 2, Docker Desktop, Windows Sandbox, Hyper-V machines and Android emulators that use Hyper-V stop working.
How do I undo it?: Switch the tweak off in Frozen Tweaks. Switching it off sets the hypervisor to start automatically, the Windows default, even if you had it off before.
Does it need a restart?: Yes, the change applies after a restart.
Is "Disable Hypervisor (Hyper-V)" 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