Error Code: 0x000000C4 when trying to install Windows 8 or 8.1 in Virtual Box

July 30, 2013 /

I tried installing Windows 8.1 Preview in Virtual Box and received the below error: (If memory serves me correctly this was the same for Windows 8)

Run the following command and then try installing Windows 8.1 Preview again.

“c:Program FilesOracleVirtualBoxVBoxManage.exe” setextradata “VM Name” VBoxInternal/CPUM/CMPXCHG16B 1

This solved the issue for me. Found the information to the solution at this article here.