Duo Authentication for Windows Logon

Where Duo Authentication for Windows Logon keeps its logs

Duo Authentication for Windows Logon logs to %PROGRAMDATA%\Duo Security\duo.log on Windows.

Paths are printed exactly as Duo Authentication for Windows Logon writes them. Environment variables like %LOCALAPPDATA% and $XDG_STATE_HOME are never expanded, so a path can be pasted straight into a shell. Where a path differs between installer types or shipping flavours, each one is racked as its own card below - why that happens.

Finding your way around Windows.