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System Status: 

AddTrust Certificate Expiration

What You Need to Do
For most use cases, including certificates serving modern client or server systems, no action is required, whether or not you have issued certificates cross-chained to the AddTrust root.

As of April 30, 2020:  For business processes that depend on very old systems, Sectigo has made available (by default in the certificate bundles) a new legacy root for cross-signing, the “AAA Certificate Services” root. However, please use extreme caution about any process that depends on very old legacy systems. Systems that have not received the updates necessary to support newer roots such as Sectigo’s COMODO root will inevitably be missing other essential security updates and should be considered insecure. If you would still like to cross-sign to the AAA Certificate Services root, please contact Sectigo directly.

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