Kernel driver not installed (rc=-1908)

Discussions related to using VirtualBox on Mac OS X hosts.
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2Bornot2B
Posts: 2
Joined: 27. Apr 2021, 10:44

Kernel driver not installed (rc=-1908)

Post by 2Bornot2B »

Hi,

after upgrade to MacOS Big Sur Virtual Box can no longer start existing VMs.

Error-Message: Kernel driver not installed (rc=-1908)
Make sure the kernel module has been loaded successfully.
where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.


macOS: 11.2.3
VirtualBox: 6.1.20 r143896

The "Allow" Button on System Preferences -> Security & Privacy -> General never shows up.
The installation succeeds without any errors, no errors in the installation log too.

Tried to fix the permissions with

# chflags restricted /Volumes/Macintosh\ HD/private/var/db/KernelExtensionManagement
# chflags restricted /Volumes/Macintosh\ HD/private/var/db/KernelExtensionManagement/Staging

and

# kextcache --clear-staging

in recovery mode - no success. Any help or suggestions are highly appreciated.
mpack
Site Moderator
Posts: 39156
Joined: 4. Sep 2008, 17:09
Primary OS: MS Windows 10
VBox Version: PUEL
Guest OSses: Mostly XP

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

Post by mpack »

This has already been discussed. See sticky at top of forum.
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