Central Authentication Service (CAS)

About CAS

At the University of Saskatchewan, we use CAS to simplify how you access our services—with CAS, you only need to log in once to access all CAS-managed services. This is referred to as single sign-on. For example, if you log in to PAWS, you will be able to access services such as Blackboard or wikis without having to log in again.

Known Issues with CAS

Mac Office 2016 following logout

  • Affects Office 2016 on Mac users. After first access and logout, the CAS cookie remains in effect but not valid for it’s normal life (10 hours).
  • Managed computers that are enrolled with the JAMF Casper Suite will have an application deployed that will delete these cookies on write to ensure those users do not encounter this issue. 
  • Unmanaged machines will have to either sign out, or delete the cookie file manually.
  • Or, wait until the 10-hour window has passed, at which point the login is no longer valid and the user will be prompted to sign in again.
  • Just signing out does not correct the situation.

Modifying documents across sharepoint sites

  • Occurs when Mac Office 2016 users are editing documents in multiple sharepoint host sites.
  • Related to “Mac Office 2016 following logout” issue.
Sharepoint mobile applications
  • Introduced by Microsoft security patch w.r.t. providing “followed links / sites”
  • Work around - have users work in a browser
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