ESR 78 improved handling of client certificates on Windows and macOS, allowing for better authentication in enterprise environments.
| Feature | Specification | | :--- | :--- | | | Gecko 78 | | Release Date | June 30, 2020 | | ESR Support End Date | October 5, 2021 | | OS Support | Windows 7+, macOS 10.9+, Linux | | Policy Engine | GPO support / policies.json | | Flash Support | Removed in later updates (v78.6+ disabled Flash by default) | firefox esr 78
A significant privacy and user experience update, this feature allows users to block videos from playing automatically by default. ESR 78 improved handling of client certificates on
Enhanced deployment options allowed administrators to run Firefox in a dedicated, full-screen mode, ideal for public-facing terminals. ideal for public-facing terminals.