The Quick Access Toolbar was introduced to File Explorer in Windows 8 along with the Ribbon UI. Now it is part of Windows 10 too. That toolbar is the only way to add custom File Explorer button without hacks or third-party tools. The Quick Access toolbar is actually very handy for mouse users because it allows you to access your frequently used commands with one click! In this tutorial, we will learn how to add any Ribbon command to the Quick Access toolbar in Windows 10.