A family of Microsoft word processing software products for creating web, email, and print documents.
I found the solution:
just follow these steps:
Go to File--> Options--> Trust Center--> Trust Center Settings--> Privacy Options--> Privacy Settings and uncheck the checkbox saying Turn on optional connected experiences (mine was checked at first). Then, restart your word and check the same checkbox. Now, restart your word again and Voila!. You will find new features like Dictate and Autosave.
