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I've been trying to install VirtualBox Guest Additions in VMs of both Rocky Linux and Alma Linux version 9.2 (with VirtualBox version 7.0.8).  After running the install script, it states that it 'cannot verify if kernel modules and services were reloaded'.

It appears that the modules are being built, as the vboxguest.ko, vboxsf.ko, and vboxvideo.ko kernel objects are in the /lib/modules/<kernel version>/misc directory.

If I manually run modprobe on any of those, I get an error such as:

modprobe: ERROR: could not insert 'vboxguest': Exec format error.

From what I've seen, that error is typically a result of running a module built against a different kernel version than the one running, but I have verified that the kernel version in the vboxadd-setup.log.1 matches uname -r.

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Try installing the necessary packages for guest additions in the guest OS.

For Rocky Linux:

Gain root privileges:

sudo -s

Enable EPEL (Extra Packages for Enterprise Linux):

dnf install epel-release  &&  dnf update --refresh

Install packages:

dnf install dkms kernel-devel kernel-headers gcc make bzip2 perl elfutils-libelf-devel

Source: Install VirtualBox Guest Additions on Rocky Linux 9 - kifarunix.com.

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  • This did not resolve the problem.
    – Christian Gibbons
    Commented May 24, 2023 at 18:44

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