Tech Tip: Sign Out of Microsoft Account
Office 2013 allows a user to sign in using a Microsoft account that links all of your Office work to an account. Signing in and out of your account is a pretty simple task thanks to the new Office. Signing out of your Microsoft account is very important especially on Shared Computers such as those around campus. Logging into a Microsoft account allows a user to access personal settings and themes, but remember to log out before you log off the computer.
To log out, first open an Office program. Go to File, and select Account. User Information will be listed here. Select Sign Out. You are now signed out of your Office Account.
Knowledgebase Article: http://helpdesk.etown.edu/helpconsole2012/KB/default.aspx?pageid=sign_out_of_microsoft_office_account