CAS Single Sign On Intermittently Unavailable

Update 4/17/26 9:28 a.m. :

All systems were stable overnight and reporting healthy this morning.

Update 2:00 p.m. :
Microsoft has located the root cause and a fix for most of the infrastructure is in place. There are some additional fixes that are being worked on to completely restore service. An update for complete resolution will be provided on Monday.  

Authentication is expected to be stable at this time, but please report to the Help Desk if you notice anything amiss in the meantime.

UPDATE: 9:40 a.m. :
 A high severity case was opened with Microsoft as part of our efforts to fully restore services. While mitigations are in place, you may notice slowdown when we reach peak network load  (Typically 11a.m.-3p.m.) until this issue is fully resolved.

UPDATE 7:57 a.m. : 
A mitigation was put in place that should temporarily fix the timeout errors and the investigation for the root cause is ongoing.

UPDATE 7:15 a.m. :
We're seeing instability again. You may see 504 errors when trying to log into the services below. Our specialists are reviewing the issue once more. 

UPDATE 10:09 a.m. Stability has improved. While work to resolve the underlying issue continues, timeout errors should be resolved. 

CAS Single Sign On Intermittently Unavailable This Morning

The CAS Single Sign On application is experiencing intermittent time outs.  This means users will be intermittently unable to log in to:

• Degree Works
• ESign Forms
• Authenticated Library Applications
• Millennium FAST
• Drupal Site Editing
• Other department line-of-business applications.

Banner, Canvas, and M365 are NOT impacted. The team is currently investigating and working to restore stability.