Solved: There was an error communicating with the Duo authentication server 12007 -

Solved: There was an error communicating with the Duo authentication server 12007

Post author:iwiizkiid
Post published:21/01/2022
Post category:Cisco / Duo / Kelvin / Troubleshooting
Post comments:0 Comments
Post last modified:12/03/2023
Reading time:1 mins read

Observed issue: While trying to login into a Windows system with Duo 2FA enabled and using local logon credentials, the following error was displayed.

There was an error communicating with the duo authentication server 12007

Observed cause: This error occurs when the device cannot reach Duo cloud to perform secondary authentication and the user is not yet enrolled for offline mode.

Solution: Ensure that the device has connectivity to the Internet and can communicate with Duo cloud over TCP/443. Furthermore, ensure that the user is enrolled to use offline passcodes.

Further reading: https://docs.microsoft.com/en-US/windows/win32/wininet/wininet-errors

Tags: Cisco, Cisco Duo, Cisco Secure, ciscocisco duo, Duo, duo error code 12007, error code 12007, There was an error communicating with the Duo authentication server 12007, windows error code 12007

iwiizkiid

Kelvin is a Cyber Security professional with years and experience working with organisations in different verticals, both large and small. He enjoys contributing to the Network Wizkid knowledge base and he also creates technical content. Kelvin enjoys learning new things and often does this by working on achieving new technical certifications. He holds many professional certifications and academically, he had achieved a Bachelors and Master's degree in both Computer Networks and Cyber Security.