CAS TLS Update Resource

In order to help improve overall security and ensure compliance with upcoming InCommon Federation requirements, OIT updated the Transport Layer Security (TLS) configuration for the Production CAS servers ( on Thursday, July 22, 2021.  Support for the legacy TLS versions 1.0 and 1.1 was removed, and only the more modern and secure 1.2 and 1.3 versions can be used when connecting to CAS.

This TLS update is transparent for most modern browsers, devices, operating systems, and platforms.  However, older/legacy clients may experience connectivity issues, and may require software/library/platform updates in order to re-establish connectivity to CAS.  Below are some resources to help with this transition to the more secure TLS versions for various platforms.


Windows .NET


Windows IIS


Java 6 and 7

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