Update:

Our single sign on (SSO) service is now fully restored and working as intended. If you have any issues with services, just close all your browser windows and re-try logging in. Thank you.

Original Post:

We have detected an issue with our single sign on (SSO) service where users may be getting a 503 error and not able to sign-in to new applications. Our single sign on service is now routing to a backup location. Users may need to close all browser windows and start a new session to ensure they can login correctly. Users already logged into applications, should not be impacted. We are now working towards restoring our main services for single sign on. We apologize for the inconvenience.