Removal of WAYF protocol from CDS (Central Discovery Service) on 28 June 2022

Posted on Wednesday, 22 June 2022

The work to remove the legacy WAYF protocol support from our CDS is progressing well. Helpdesk staff have worked with almost all operators of WAYF-using service providers (SPs) to migrate to the DS protocol (which supports SAML 2) or alternative discovery solutions. There are a handful of cases where we have had no response from the SP operators after repeated attempts, and we are continuing to chase these SP operators.

A consequence of this work is that IdP operators will no longer be easily able to test SAML 1 endpoints using the UK federation Test SP (because we used the WAYF protocol, too). If you need alternative options, or have any questions, please contact Matt Huckson through the UK federation helpdesk at

Edited by MatthewSlowe on 22 June 2022, at 10:32 AM