Duo phone restrictions on Chinese +86 numbers

Due to recent telephony restrictions by the Chinese government, effective April 11, 2019, Duo is no longer able to deliver automated phone calls for authentication to users with +86 numbers. All other authentication methods, including phone-based options such as Duo Push and SMS passcodes, are not affected.

Users with +86 phone numbers will receive an alert regarding the issue each time they access an application that displays the web-based Duo Prompt.

Here is the message they will see:
Here is the link in the above image: “Click here for more information”

Should you need immediate assistance, please contact the Service Desk at 314-933-3333.

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