Command 'rcvboxadd reload' fails when installing Guest Additions

[LateJunction]

I'm installing Guest Additions for Linux on Version 7.1.0 of Virtual Box, running in a Win 10 host.

Running the install script VBoxLinuxAdditions.run fails with a message that VirtualBox Guest Additions "cannot reload kernel modules: one or more module(s) is still in use".

It recommends I run "rcvboxadd reload". This fails with the same error message.

I ran 'sudo apt-get instal gcc-12' again and reran the VBoxLinuxAddiiotns. This failed with the same error message and suggested I run ;/sbin/rcvboxadd reload quickstep all'. This resulted in the same error.

I am out of ideas now. How to handle this error condition?

[FX8370core]

You are not disclosing what your Linux guest system in the VBox is. Is it Debian? The host is irrelevant for the guest additions installation.

Please be specific, I can help if you have an issue with a Debian or its deriviates in VBox.

[LateJunction]

Beg pardon - I had assumed (apparently incorrectly) that the problem I am experiencing is independent of the particular distro, as it appears to be Linux kernel related. To correct things: I am trying to install Guest Additions in Zorin 17.2. The base OS seems to run without issue, to the best of my understanding.

[FX8370core]

Too bad, I have no experience with Zorin OS.

May this helps:
You need dkms or another build environment suitable for Zorin. Kernel headers have to be installed on the guest.
Have a look at my comment in viewtopic.php?p=551084#p551084