However, if you don’t want to wait, you can download the ISO file for the enterprise version of the Windows 10 preview, including the one for build 9879, which it seems the company is making available before it reaches the Fast ring of the Windows Insider Program. The Windows Technical Preview ISO file is available in 32-bit and 64-bit versions, and in English, English (Great Britain), Chinese (simplified), and Portuguese. If you’re running build 9860 on a virtual machine or spare computer, you can simply update via the Windows Update (Preview builds) and choosing the Fast ring option. But if you want to create a dual-boot and using a VHD (or VHDX), or you simply want to do a clean install, but you don’t want to wait, you can download the Windows 10 Technical Preview build 9879 (enterprise) ISO instead. Update: After the clean installation of Windows, you’ll be promoted to activate the preview, make sure you use this product key: PBHCJ-Q2NYD-2PX34-T2TD6-233PK, as the product key for the Windows Insider Program non-enterprise won’t work in this installation. Source Microsoft 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.