Microsoft will be rolling out the new Microsoft Edge web browser in January. This is the web browser based on the Chromium code. Additionally, after release, this web browser will be bundled in all future releases of Windows 10.
For those companies not quite ready to switch to the new Edge, Microsoft has supplied a Blocker Toolkit, which is essentially a .CMD file.
You can get it here: Blocker Toolkit to disable automatic delivery of Microsoft Edge
The download page also includes all information about how to use the tool. Ultimately, the toolkit makes a change to the Windows registry, which can also be managed through group policy and can be found at the following path:
/Computer Configuration/Administrative Templates/Windows Components/Windows Update /Microsoft Edge (Chromium-based) Blockers