The Office apps are not currently available in all countries. Once available, you'll be able to utilize this integration. For those countries, we won't show the Edit icon within the Dropbox app. Tapping the Edit icon while viewing an Office file in your Dropbox will show you an option to directly install the Office app. You can also go to the App Store (iOS) or Google Play Store (Android) to search for the Microsoft Office apps to install. You will not be able to download the apps, however, if your App Store or Google Play Store account is based in a country where the Office apps aren't available.