
This will open the VirtualBox - Preferences window. I decided to create a debian package of this instead as we are running our own repo anyway.

This is a guide on How to install latest VirtualBox, VirtualBox Guest Additions and Extension Pack on Arch Linux. Failed to install the Extension Pack VirtualBox itself is Open Source, but the extension pack adds "USB 2.0 and USB 3.0 devices, VirtualBox RDP, disk encryption, NVMe and PXE boot for Intel cards". Step 2) Install VirtualBox extension package Next, click the icon with plus sign to add the downloaded extension package. To install the extension pack from VirtualBox user interface, launch VirtualBox and navigate to File > Preferences > Extensions. This shows you the extensions which are currently installed, and enables you to remove a package. Install macOS Monterey using VirtualBox: Install Expansion Pack. Installing this plug-in you can get features (Mouse Integration, Drag & Drop, USB support, Internet Connectivity, and etc… Click the green plus button in the right panel and browse to select the downloaded VirtualBox extension pack software. However, VirtualBox won't install because it needs Administrator rights. Install the VirtualBox package with: sudo apt install virtualbox. This command will fail if an older version of the same extension pack is already installed.

Are you running the old version of the Virtual box? Just adding a note to that dialog that malware scanners have been known to cause problems with extension pack installation would have been sufficient. Despite being an open-source product, some of it's features aren't available in a fully-functional binary format as with a paid version (see "VMware VirtualBox. The extension pack will then be upgraded along with VirtualBox when necessary.

The VirtualBox Guest Additions are software packages which can be installed inside of supported guest systems to improve their performance and to provide additional integration and communication with the host system. Instructions for 18.09 and up can be found here.
