debian 9.9 VBoxClient Failed to connect to the VirtualBox kernel service , rc=verr_file_not_found

[HandDown]

host Windows 10
guest linux debian 9.9

uname -a
Linux machinename 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1 (2019-04-12) x86_64 GNU/Linux

After

#apt update | apt full-upgrade

LinuxGuestAddition stop works. I was rerun VBoxLinuxGuestAddition.run. It doesnt help.

I downloaded debian 9.9 netinstal iso, and perform a clean install.
After that

#apt install module-assistant dkms linux-headers-$(uname- r) build-essentiales
#m-a update
#m-a prepare 
#cd /media/cdrom
#sh ./VBoxLinuxAdditions.run

i've got cli window with this " VBoxClient Failed to connect to the VirtualBox kernel service , rc=verr_file_not_found" on screen

rerun "#sh ./VBoxLinuxAdditions.run "

this is output

Verifying archive integrity... All good.
Uncompressing VirtualBox 6.0.6 Guest Additions for Linux........
VirtualBox Guest Additions installer
Removing installed version 6.0.6 of VirtualBox Guest Additions...
update-initramfs: Generating /boot/initrd.img-4.9.0-9-amd64
Copying additional installer modules ...
Installing additional modules ...
VirtualBox Guest Additions: Starting.
VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel 
modules.  This may take a while.
VirtualBox Guest Additions: To build modules for other installed kernels, run
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup <version>
VirtualBox Guest Additions: or
VirtualBox Guest Additions:   /sbin/rcvboxadd quicksetup all
VirtualBox Guest Additions: Building the modules for kernel 4.9.0-9-amd64.
update-initramfs: Generating /boot/initrd.img-4.9.0-9-amd64
Killed
update-initramfs failed with error code 137.
VirtualBox Guest Additions: Running kernel modules will not be replaced until 
the system is restarted


#usermod -a -G vboxsf MyUsername
#shutdown -r 0

1st image crash error: ibb.co/nzGLPC1
2nd after restart: ibb.co/KDwmXdr
3rd long waiting here: ibb.co/ftsLJF3

P.S. Cannot post images with crash report, canot download from virtualbox (bad cert), cannot run VM. NICE
have a nice day

[mpack]

I assume you followed the instructions quoted and restarted your guest OS.

Can you point out where in the user manual it tells you to install DKMS?

P.S. Cannot post images with crash report

Sure you can. The only thing you can't do is post an offsite URL, which we don't want anyway. Attach images locally.

canot download from virtualbox (bad cert)

A short term (weekend) problem, only with the https service, and already fixed. Yes, websites go down sometimes. It's bound to come at an inconvenient time for somebody.

[Bendermh]

The same problem, linux additions are not working on Debian 9.9

[socratis]

If you want to use the latest version for your host/guests, you should also consider doing the same for VirtualBox. Download the latest VirtualBox. As of this writing, that would be version 6.0.6.

If that doesn't work, you should try the latest test builds, and keep on trying them as they come fresh from the oven...