If you upgrade your ubuntu to version 20.10, you maybe see this error message after you run virtual box.

To fix this problem you need to install the kernel module vboxdrv.
To install the latest version, go to this website https://www.ubuntuupdates.org/package/core/groovy/multiverse/proposed/virtualbox-dkms and download deb package installation. according to your system architecture 32bit or 64bit, and install this package.

After , enter to your terminal and enter this command: “sudo /sbin/vboxconfig” , and then try to run virtual box again.
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