Guidelines for files, data, and connectivity

Applies to Windows and Windows Phone

This section includes guidance for accessing files and data from your app, and for connecting users to the Web and to their accounts.

You can allow users to access folders, files, and data from you app. To allow users to access data from an account or in cloud services like OneDrive, you can provide them with a signed-in experience. Include application data roaming in your app to give a seamless experience across devices.

In this section


Connection usage data

Consider the following recommendations when using Windows Runtime Network Information APIs in your connected app.

Custom data formats

Users share a variety of information when they're online. Successful apps take the time to analyze the types of information that users are most likely to share with others, and package that information so that the receiving apps can process it correctly. In many cases, the information users want to share falls into one of the six standard formats that Windows supports. However, there are some instances in which having a more targeted data type can create a better user experience. For these situations, your app can support custom data formats.

File types and URIs

By understanding the relationship between Windows Store apps and the file types and protocols they support, you can provide a more consistent and elegant experience for your users.


Many Windows Store apps provide a personalized or premiere experience to users when they're logged in. Some apps require the user to log in to a registered account to get value from the app. Other apps provide a rich baseline experience for all users but enable enhanced features when the user is logged in.

Roaming app data

Follow these guidelines when you design your Windows Store app to include roaming app data.


Follow these guidelines for designing a Windows Store app that interacts with a Microsoft OneDrive user's files, documents, pictures, videos, folders, albums, or comments.

Single sign-on and connected accounts

Describes guidelines for Windows Store apps to provide an authenticated experience to users who have Microsoft accounts.


These guidelines describe how to use thumbnail images to help users preview files as they browse in your Windows Store app.

User names and account pictures

In Windows 8, apps can retrieve the current user's name and image (called the account picture) and use them to identify and create personalized experiences for the user.




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