If you've connected your Microsoft account to another account such as Facebook, LinkedIn or Twitter, you can choose what information you want to be shared between the two accounts.
For example, if you connect a Facebook account, you can choose to show info such as your Facebook contacts' email addresses and birthdays in Windows RT 8.1 and Windows 8.1 apps such as Mail, People and Calendar.
Microsoft won't share information associated with your Microsoft account without your permission.
Go to the Microsoft account web page and sign in.
Tap or click Permissions, then tap or click Manage accounts.
Tap or click Edit by the account you want to review.
Review the settings, make any changes you want, then tap or click Save or Connect.
For information on how to create a Microsoft account and connect it to other accounts that you use on the web, see Creating a user account and How to add an account to your Microsoft account