I have that problem (Setup Wizard ended prematurely) when try to re-install my VirtualBox 2.1.0 and 2.1.2 on my Windows box. I was previously install with virtualbox 2.0.6. When VBox 2.1.0 arrives, I was able to install that version smoothly, without any problem. After using vbox 2.1.0 for quite some time, everything was good. Until one day, I had something problem with my Cisco VPN connection 3 weeks ago. I had some problem with re-installing Cisco VPN, then I decide to remove my Vbox for a while and trying to resolve Cisco VPN. After the problem was solved with Cisco VPN, then I need to re-install again my Virtualbox. Then, this annoying error is makes me confused.

I had “Setup Wizard ended prematurely” error every time I re-install virtualbox with version 2.1.0 and the newest 2.1.2. That is why I only able to use 2.0.6 version for the last 3 weeks. Only that version able to install successfully. Start googling around at that time still no luck. Today I am googling again and find a ticket on Virtualbox website telling the same issue.

Error when installing virtualbox 2.1.0

Error when installing virtualbox 2.1.2

According to ticket issue on Virtualbox, I need to disable all off network adapter NICs to install Vbox. I have already try it but still had the same problem. Still has that error. Then, I find the root problem. The problem is because when Virtualbox install a newer version, it’s not uninstall old version of network adapter on my machine. That is why this error happen.

Step to solve this problem that works for me:
1. Uninstall first previous version of Virtualbox.
2. Disable all of network adapter NIC (Network Interface Card) on your Windows box.
On control panel, go to System | Hardware | Device manager, browse the network adapter.

3. Uninstall/Remove “Virtualbox host interface networking driver” from network adapters.


4. Now, try to install virtualbox again.

5. If it’s success, enable again all network adapters and if necessacry, restart your windows machine.