Just in time delivery of a consistent user profile to overlapping user sessions, where a first user session issues a request for a first file of a user profile to a server agent. Upon receiving the request, the server agent retrieves the first file from a base user profile, and just in time delivers the retrieved first file to the first user session. The user, via a second user session executing simultaneously with the first user session, issues a request to the server agent for the first file and a second file of the user profile. Upon receiving the request, the server agent identifies a modified version of the first file in a provisional user profile, retrieves the modified first file from the provisional user profile and the second file from the base user profile, and just in time delivers both files to the second user session.