Application ID

Identifier of your website; you were given this ID when registering your website to LiveID.

Application secret

Secret code that will be used for encryption of messages transferred between your website and the LiveID server; you entered this key when registering your website to LiveID.

Security algorithm

Algorithm used for encryption of messages transferred between your website and the LiveID server; it is recommended to use wsignin1.0.

Assign new users to roles

New users registered via LiveID login will be assigned to these roles.

Required user data page

Alias path to a page containing the 'Required LiveID user data' web part; if entered, then when a new LiveID user logs in to the site, their user account is not created automatically, but they are required to enter some additional data (or merge with an existing account) using the web part.