VirtualBox: Fixing the "During certificate downloading: Unknown reason" error during VBoxGuestAdditions download
![VirtualBox: Fixing the "During certificate downloading: Unknown reason" error during VBoxGuestAdditions download](/content/images/size/w1200/2024/01/VBoxGuestAdditions-download-error-sectorgeek.jpg)
If you come across this error while trying to to download the VirtualBox Guest Additions
![During certificate downloading: Unknown reason](https://sectorgeek.com/content/images/2024/01/image.png)
Don't worry, the solution is pretty simple. Just download the iso file straight from the website (update your VirtualBox version number in the url)
https://download.virtualbox.org/virtualbox/7.0.14/
Then, mount the file by going to Devices > Optical Drives > Choose a disk file...
and follow the on-screen instructions in your guest OS.