I am on Mac OS (Catalina) 10.15.4 and Virtual box 6.1.8. I was facing the same issue since past couple of days and nothing seems working for me, not even the command the guy mentioned above. Finally, I have downgraded my Virtual box version to 6.1.6 and installed the Oracle VM VirtualBox Extension Pack for VB 6.1.6. Now everything is working fine.
I use Oracle VirtualBox to test various Linux and Unix distributions. I’ve tested hundred of virtual machines in VirtualBox so far. Today, I started Ubuntu 18.04 server VM in my Ubuntu 18.04 desktop and I got the following error.
“Kernel driver not installed (rc=-1908)” Error in Ubuntu
I clicked OK to close the message box and and I saw another one in the background.
The virtual machine has terminated unexpectedly during startup with exit code 1 (0x1)
- Using spctl the install procedure ends correctly but the driver is not installed correctly. Currently fixed by installing Virtualbox 6.0.4 ( 6.0.6 still have the problem ). Must be executed in Recovery Mode. If you did boot into Recovery Mode, then you've got a different problem. Perhaps, clearing your kext cache.
- VirtualBox is one of the most popular free virtual machines (VMs) for macOS, besides paid applications like Parallels or VMware. Whether you're testing code, comparing browsers, or just testing, the common 'Kernel Driver Not Installed (rc = -1908)' is easy to fix.
I didn’t know what to do first. I ran the following command to check if it helps.
And, I got this error.
After carefully reading the both error messages, I realized that I should update the Virtualbox application.
If you ever run into this error in Ubuntu and its variants like Linux Mint, all you have to do is just reinstall or update the “virtualbox-dkms” package using command:
Or, it is much better to update the whole system:
Now the error has gone and I could start VMs from VirtualBox without any issues.
Related read:
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Virtualbox Osx Kernel Driver Not Installed
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