break down some of the core components of credential roaming and how it functions. To secure critical transactions such as signing, encrypting, and decrypting e-mail or authenticating identity, many environments rely on certificates. The user certificates and the associated private keys are linked to the local profile on whatever machine the user logs onto. Let’s talk about the local user profile briefly. When a user logs onto a computer for the first time a local profile is created for that user. This profile sets the desktop environment, certificates, private keys, and all other user-specific configuration information. When the user logs back onto the same machine this profile is reused.