virtualbox.org

Hello!
Host - Windows 7 (64 bit), Guest - Windows 7 (64 bit)
Using a home computer I installed VirtualBox 5.2.20 on a USB flash drive. Program works fine. But on another computer with Windows 7 the program does not work, error code REGDB_E_CLASSNOTREG (0x80040154)
Please explain me how to run VirtualBox installed on a flash drive on other computers.

Sergey13 wrote:Please explain me how to run VirtualBox installed on a flash drive on other computers.

You can't (at least not easily). When you install VirtualBox a number of device drivers get installed into the Windows driver directory (typically C:\Windows\System32\Drivers) and these are registered with the host OS so that they get loaded at the appropriate time.

What you have installed onto your USB flash drive is only about 80% of VirtualBox.

-Andy.

The error message is telling you what's wrong. To paraphrase: there's a bunch of stuff that needs to be in the registry but isn't there.

Even if you got it to run, performance would be terrible. A USB flash drive is great for toting data around, not so great as a system drive. Way too slow, especially on writes.

Performance is not so important to me. It is important for me that I can run virtual machine on any computer without installing it on a computer. As I understand it, for this it is necessary that VirtualBox be fully installed on USB flash drive.
Is it possible???
If Yes, PLEASE explain how to do it

As Andy already wrote: It is not possible to run VirtualBox without an installation because it needs system drivers.