A system and method for efficiently accessing Web resources. A directory service and an authentication service may be used to determine whether a login session attempt on a deployed device is successful. At least one deployed device in a system receives credentials from a user during a login request and requests authorization using the received credentials for both a login session and for accessing Web resources. The device sends the authorization request to Web services on a server hosting the Web resources. The Web services interact with an authentication service to verify authentication for the user. The device receives an access token upon verification for authorization for the given user and securely stores it. When a client program executing on the device requests access to the Web resources, the device sends an access request with a copy of the stored access token to the server hosting the Web resources.