Extending Single-Sign-On to Relying Parties of Federated Logon Providers

Aspects of the disclosure relate to extending single-sign-on to relying parties for federated logon providers. An enterprise identity provider server may receive a first authentication token previously issued to an enterprise server by the enterprise identity provider server. Subsequently, the enterprise identity provider server may retrieve, from a token store, a second authentication token associated with a federated identity service provided by a federated identity provider server. The enterprise identity provider server may refresh the second authentication token with the federated identity service provided by the federated identity provider server to obtain a refreshed authentication token. Finally, the enterprise identity provider server may send the refreshed authentication token to the enterprise server, which may enable user devices managed by the enterprise server to access one or more resources provided by a third party system using the federated identity service.