WIN
Mozilla Firefox - Windows
MozillaLogs
%APPDATA%\Mozilla\Firefox\Crash Reports\Mozilla Firefox
3 log locations · Windows, macOS, Linux
Where Mozilla Firefox keeps its logs
Mozilla Firefox logs to %APPDATA%\Mozilla\Firefox\Crash Reports\ on Windows.
Mozilla Firefox logs to ~/Library/Application Support/Firefox/Crash Reports/ on macOS.
Mozilla Firefox logs to ~/.mozilla/firefox/Crash Reports/ on Linux.
Paths are printed exactly as Mozilla Firefox 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.