I am getting error code C4 when trying to install Windows Server 2012 on VirtualBox. I was able to install this a few weeks ago. However I had to install a fresh copy again. This time however I always get error C4 no matter what I try.

Settings I'm using:

  • 1024 MB base memory
  • 2 Processors
  • 27Mb video memory
  • I have checked to ensure Intel Virtualization Technology (vt-x) is enabled in my BIOS.
  • Also I have SetExtraData as suggested in this post.

One change I have made to the BIOS since the last successful install was to disable "No eXecute".

Any ideas as to what I am doing wrong?

1 Answer 1


I had disabled "Execute Disabled Bit" in my BIOS in order to install Windows Server 2008 R2 on my VirtualBox.

Re-enabling it seems to have fixed the issue with Windows Server 2012.

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