That option has been deprecated for some time <https://developers.google.com/google-apps/sso/openid_reference_implementation> (the only references to that option are from blog and forum posts for 4+ years ago). You don't need that option for federated sign-in anymore though, as this functionality is now provided by Open ID Connect via the Google Identity Toolkit <https://developers.google.com/identity/protocols/OpenIDConnect>.
On Saturday, September 17, 2016 at 11:32:07 PM UTC-4, channing dev wrote: > > > Hello, > > Why I can't see the "Experimental Federated Login" option in App Engine > Settings on my GAE projects? > > > <https://lh3.googleusercontent.com/-Gf576UgXz9U/V94KdPxWW9I/AAAAAAAAACg/GmN4BI5mVMEPb9K0SCvPA-J9BCMUACERwCLcB/s1600/Untitled.png> > > > Thanks a lot. > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/c1df25d4-a05c-439e-8531-b6ee6814441c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
