Back in 2018, we announced the end of support for OpenID at Stack. Although we've deprecated support for OpenID logins and endpoints, the openid.stackexchange.com URL has remained online. Starting in November, 2022 all OpenID endpoints and our OpenID URL will become unavailable.
If you are still using the Stack Exchange OpenID provider to authenticate with any website, you will need to update your external applications to authenticate using a different mechanism.
Update your external applications with new credentials by November 1, 2022 - after which, you will not be able to use Stack Exchange OpenID to authenticate. Users and applications will still be able to authenticate within the Stack Exchange network using the same username/password credentials that were used to create the OpenID login, but there will be no OpenID endpoints or URL available.
It's also worth noting, so far as we can tell, no one is actually using Stack Exchange OpenID at all. So, in principle, there should be no action needed for anyone.
We're finalizing our removal of OpenID for the reasons outlined in the linked post above. But, to summarize:
- Only a small number of accounts used OpenID at all, and no one appears to be using it today.
- OpenID support, globally, has largely been replaced by newer OAuth variants like OIDC. While we do not plan to immediately support OIDC, you can use these newer mechanisms today through social sign-in like Google or Facebook.
TL;DR - If you aren't sure if you’re using OpenID, you don't need to do anything.
If you're the developer of a bot, you’ve probably already changed your application to use the new login form. If you haven't, you can use a non-OpenID login route. Information on alternate bot authentication mechanisms is available in the Chat bot migration from OpenID chat room.