Click here to download Microsoft Windows XP ISO for Virtual Box. Once downloaded then you can perform the installation using the guide given.
Here is how to download and install Oracle VM VirtualBox Extension Pack for your Windows and macOS. Click on the links to download.
Without Extension Pack, you are missing so much. Quickly install VirtualBox Extension Pack on your Ubuntu to enable tons of powerful features.
While installing macOS Big Sur, many users have experienced (BiError Domain Error 3.) error. And here is how Fix macOS Big Sur (BiError Domain Error 3.)