Virtualbox on centos 7 – Kernel driver not installed (rc=-1908)

Error :
Kernel driver not installed (rc=-1908)

the virtualbox linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall the kernel module by executing :

‘/sbin/vboxconfig’

as root.

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See this video how to fix that error.

source

centos 7