Seems to only work with the Sophos Authenticator. Google Authenticator and DUO do not recognize the QR code
https://docs.sophos.com/nsg/sophos-firewall/18.5/Help/en-us/webhelp/onlinehelp/nsg/sfos/learningContent/AuthenticationConfigureTwoFactorAuthentication.html
Hello djb-sophos,
It is a known issue described in the following knowledgebase article: https://support.sophos.com/support/s/article/KB-000036749?language=en_US