Cortana is your personal digital assistant in Windows 10. She gets to know you and helps you get things done, letting you interact with her in a way that’s easy and natural. She can search the web, find things on your PC, show you the local news and weather, and provide reminders based on time or location. Just tell Cortana what you want, and she’ll be there to help you out.
NOTE: To get the most out of Cortana, you must be signed in with your Microsoft or work account.