Step 4: Starting of Kali Linux

Now we are starting the Kali Linux by clicking the start button. After clicking two cases will arise:

• Sometimes it will run successfully.
• Sometimes you will get an error like this:

To fix this error, you have to download the Oracle VM VirtualBox Extension Pack of the same version of VirtualBox. 

To find the version of Virtual Box just click on Help then click on About VirtualBox.

Now download the VirtualBox Extension of 5.2.20 version. Use the following link to download it:

https://download.virtualbox.org/virtualbox/5.0.20/

Now click on Oracle_VM_VirtualBox_Extension_Pack-5.0.20.vbox-extpack and download it.

Install the VirtualBox extension pack. 

After installing, to check it clicks on             File → Preferences → Extensions. 

Here you can see the Oracle VM VirtualBox Extension Pack. Click OK.

Now the problem is fixed, and we can start the virtual machine by clicking the start button.

After starting, it will ask us for the Username, and the default Username is root then it will ask us for the password and the default password is the reverse of root which is toor.