For those using VirtualBox, the software will just freeze and those users trying build 9901 with VMware Workstation will find that the virtual machine will just keep looping and the Windows 10 installation will never start. It is understandable, this is a pre-release version of the operating system and as any unfinished product, there are many bugs, which makes the software unsuitable for any PC. However, there is a workaround the problem blocking users from install Windows 10 build 9901 on a virtual machine. This video tutorial that I have put together will guide you step by step to properly configure VirtualBox to install the leaked version of the operating system. Enjoy! All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.