Fix: VirtualBox – no 64 bit option for guest OS, only 32 bit available

Here we present a solution to the problem that VirtualBox is not showing any option to install and run 64 bit guest OS.

Solution to VirtualBox not showing 64 bit option for guest OS

First, your computer CPU must support 64 bit virualization. Check that your CPU is supporting VT-x/AMD-v.

When you are sure that the CPU is supporting 64 bit virualization the problem might be a conflict with Microsoft Hyper-V virtualization software.

Turn off Microsoft Hyper-v by running the following in a cmd window with administrator privileges:

1. bcdedit /set hypervisorlaunchtype off
2. Reboot your computer
3. Now it should be possible to run 64 bit guest OS in VirtualBox.

To turn Hyper-v on again:

1. In a cmd window with administrator privileges: bcdedit /set hypervisorlaunchtype on (or auto start)
2. Reboot.