Current peer-to-peer architectures are hardly resistant against unanticipated exceptions such as the failure of single peers. This can be justified by the absence of sophisticated models for detecting and handling exception in peer-to-peer architectures. On the other hand, existing models for such self-adaptable architectures are rather generic and less practical for end-users. In this work, a component-based self-adaptability model for peer-to-peer architectures is presented that supports end-users in the handling of exceptions during use time. Support is also provided to handle exceptions during deployment and adaptation of an application. All these approaches are integral parts of DeEvolve, a peer-to-peer runtime environment for component-based peer services.