Concurrent access to a user profile in a layering system is provided. When a user logs into a computing device, the server can locate a corresponding user profile to identify which layers should be provided to the user. Rather than sending these layers to the computing device for mounting, the server can mount the layers on the server. Therefore, if a user logs into multiple computing devices, the layering file system and registry filter drivers on those devices can route file system and registry requests to the server where the layers are mounted. Since the layers are mounted to a single device, concurrent access can be provided without the concern of data conflicts.