Explaining bcdedit command
The command bcdedit /set hypervisorlaunchtype off disables the Hyper-V hypervisor from launching at boot. This affects virtualization features like Hyper-V, WSL2, Windows Sandbox, and more—especially security features like Windows Defender Application Guard and Memory Integrity. The bcdedit command modifies the boot settings for Windows.
Clarifying bcdedit command behavior
The command bcdedit /set hypervisorlaunchtype off disables Hyper-V, allowing third-party hypervisors like VMware or VirtualBox to use VT-x/AMD-V for better performance. It modifies the boot configuration data (BCD) for the current operating system. By default, it applies to the active OS's boot entry if no identifier is used.
Explaining hypervisorlaunchtype off
Running bcdedit /set hypervisorlaunchtype off disables the Hyper-V hypervisor for the current boot entry. This requires admin privileges and takes effect after a reboot. It doesn’t uninstall Hyper-V, but prevents it from starting up. To revert, use bcdedit /set hypervisorlaunchtype auto. Also, check status with bcdedit /enum {current}.
Explaining Hyper-V and Boot Configuration
In Windows 11, turning off virtualization-based security via bcdedit disables the hypervisor, but some features like the Windows Hypervisor Platform might stay installed. The setting changes the boot configuration, controlling the use of hvloader. Keep in mind, disabling VBS may reduce security. Check with bcdedit.
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