Import your subscription publish settings file in Visual Studio 2013
Before you can create the mobile service, you must import the publish settings file from your Windows Azure subscription into Visual Studio. This enables Visual Studio to connect to Windows Azure on your behalf.
In Visual Studio 2013, open Solution Explorer, right-click the project then click Add and then Connected Service....
In the Services Manager dialog, click Create service..., then select <Import...> from Subscription in the Create Mobile Service dialog.
In Import Windows Azure Subscriptions, click Download subscription file, login to your Windows Azure account (if required), click Save when your browser requests to save the file.
The login window is displayed in the browser, which may be behind your Visual Studio window. Remember to make a note of where you saved the downloaded .publishsettings file. You can skip this step if your project is already connected to your Windows Azure subscription.
Click Browse, navigate to the location where you saved the .publishsettings file, select the file, then click Open and then Import.
Visual Studio imports the data needed to connect to your Windows Azure subscription. When your subscription already has one or more existing mobile services, the service names are displayed.
After importing the publish settings, consider deleting the downloaded .publishsettings file as it contains information that can be used by others to access your account. Secure the file if you plan to keep it for use in other connected app projects.