Why do I get an "Activation Failed" error?

A knowledge base article about Why do I get an "Activation Failed" error? provided by the UC Berkeley IT Service Hub - Knowledge Portal

Smart phone screen capture shows Activation Failed error.

If you get an "Activation Failed" error message in the Duo Mobile App, it means your Duo app is out of date. Once you update the app to its latest version, you will be able to complete the 2-Step process.

For more information and answers to other common questions, please see: How to use CalNet 2-Step (KB0015541).