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Is Firefox 115.33 ESR the Final Browser Update for Windows 7 Users?
Mozilla recently launched Firefox 148.0, featuring comprehensive AI management tools, alongside Firefox 115.33.0 ESR, which marks the definitive end of support for Windows 7 and 8.1.
Firefox 148 AI Controls
Mozilla introduced a centralized AI management section within the desktop settings of Firefox 148.0, available starting February 24, 2026. This new panel features a global toggle designed to immediately block all generative AI enhancements, including the sidebar chatbot, intelligent link previews, and automated PDF alt-text. For users who prefer a customized experience, individual toggles permit the activation of specific AI tools while Mozilla continues developing features for interested participants.
System and Accessibility Improvements
Firefox 148.0 optimizes screen reader functionality for mathematical formulas embedded within PDF documents and expands native translation support to include Vietnamese and Traditional Chinese. The browser now decouples remote configuration changes from telemetry requests, ensuring users receive necessary updates even if they decline data collection. Additional refinements include a Windows 10 backup system that smartly excludes transient history data and a bug fix for dragging images into Adobe Illustrator.
Firefox ESR Lifecycle Updates
Firefox 115.33.0 ESR serves as the final supported version for devices running Windows 7, Windows 8, Windows 8.1, and macOS 10.12 through 10.14. This specific update strictly delivers essential security fixes and stability improvements without introducing new features. Systems operating on these older frameworks will no longer receive updates, whereas modern enterprise environments will utilize the concurrently released Firefox 140.8 ESR for ongoing security patches.