Use VirtualBox from USB flash drive on different PC

[Sergey13]

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.

[andyp73]

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.

[mpack]

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.

[Sergey13]

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

[Martin]

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