VirtualBox Guest Additions - Install, Upgrade

[Tom]

You can install and upgrade VirtualBox Guest Additions on your VirtualBox VM's.

Download the ISO image (VBox GuestAdditions):
https://www.oracle.com/virtualization/technologies/vm/downloads/virtualbox-downloads.html

Note: the link on the above page is not always updated timely, however, you can substitute the version in the link to get the latest iso file:
https://download.virtualbox.org/virtualbox/6.1.38/VBoxGuestAdditions_6.1.38.iso

Windows 10/11 will allow you do open the .iso file after displaying a warning, you can now copy the (signed) file called VBoxWindowsAdditions-amd64.exe (or VBoxWindowsAdditions-x86.exe if you have any 32bit guests) to another folder.

The installation is made silent by /S.