DUO has reported issues with phone-call-based authentication on their systems today, leading to some users being locked out for several hours for too many authentication failures. We do NOT recommend that ACCESS users employ phone-call-based authentication, as it is often unreliable, and prone to being abused. We strongly recommend that ACCESS users configure their DUO authentication to use the DUO App on a mobile device, and to use Push authentication. Other authentication methods, including Passkey or token-based authentication are known to work well. For more information about setting up DUO, please consult the documentation at https://guide.duo.com/universal-prompt#add-or-manage-devices.