Microsoft has added this new feature ‘Windows Sandbox’ in the May update of Windows 10. The program is useful for keeping your Windows 10 device safe from untrusted applications. You can use Windows Sandbox for testing or temporarily using an unauthorized or untrusted program on your Windows 10 system. You should try this feature if you think installing an app may be risky or affect your device. Here is how to activate and use Windows Sandbox in Windows 10 May 2019 Update.