#VirtualBox

2 guides

Virtualization (Hyper-V, VMware, VirtualBox)

How to Install Windows 11 in VirtualBox

Install Windows 11 in VirtualBox the right way: enable TPM 2.0 and Secure Boot in EFI, set VM specs, mount the ISO, handle the requirement bypass, and add Guest Additions.

Sysadmin Desk Jun 28, 2026 7 min read

Diagram-style cover showing CPU virtualization extensions being claimed by the Windows hypervisor while VirtualBox waits for VT-x to be freed

Virtualization (Hyper-V, VMware, VirtualBox)

How to Fix VirtualBox VT-x Is Not Available (Conflict with Hyper-V)

VirtualBox says VT-x is not available (VERR_VMX_NO_VMX)? Here's how to free your CPU virtualization from Hyper-V, Memory Integrity, and WSL2 — and fix it for good.

Sysadmin Desk May 24, 2026 11 min read