I have installed Kali Linux on VirtualBox but I had not been open for the last 1 month. Now I am trying to start Kali on VB but it gives me an error.


enter image description here

After closing this dialog box, it is opening another one to creating a process.

enter image description here Any help is highly Apreciated.

  • Rebuild the host modules? Start the services?
    – Bib
    Commented Aug 22, 2021 at 13:06
  • How to do it? can you explain? Commented Aug 22, 2021 at 13:14
  • vboxconfig? systemctl start vboxdrv.service? Both as root.
    – Bib
    Commented Aug 22, 2021 at 13:16
  • @Bib please write a step or something like that so, I can understand I know systemctl but I am not able to enter kali... Is it any other way to execute it ?? Commented Aug 22, 2021 at 13:24
  • Please post the full details of the error from virtualbox. This is clearly happening on a Windows host
    – Alex
    Commented Aug 22, 2021 at 13:28

1 Answer 1


I had the same problem, and I got it working.  I tried two things together, so I don't know which one solved my issue.

  1. Open an administrator CMD and run

    bcdedit /set hypervisorlaunchtype off

    You should get the response "The operation completed successfully."  Now restart your computer.
    Source: Solved: VirtualBox Failed to open session for Virtual Machine (Windows 10) (YouTube video).

  2. I tried to reinstall vbox software without deleting the original files; so you download the installer from the Oracle webpage and just install it normally as if the application wasn't found on your PC.  After that, when opening the software you will get some notification to update guest editions, so go on and update it.

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