Tor-browser-11-0 May 2026

: The transition to the Proton design refreshed the look of the browser, featuring updated typography, simplified menus, and a more modern tab design.

: One of the most critical technical shifts in the 11.0 series was the complete removal of support for version 2 onion services. Users were required to migrate to the more secure version 3 onion addresses , which offer better encryption and authentication. Post-Launch Stability Issues

: These critical stability issues were addressed in rapid follow-up releases, such as 11.0.2 , which focused on resolving the extension and tab crashing bugs identified by the community. Privacy and Security Context tor-browser-11-0

While 11.0 brought modern features, its initial rollout faced several technical hurdles reported by users on the Tor Project Forum :

Tor Browser 11.0, released in November 2021, represented a significant overhaul of the privacy-focused browser, primarily by moving to the codebase and introducing the "Proton" user interface . This version aimed to modernize the user experience while maintaining its core mission of providing anonymous, uncensored internet access. Key Features and Modernization : The transition to the Proton design refreshed

Despite the version-specific UI changes, the fundamental security model remained unchanged: Tor Browser best practices - Security

: Some users experienced issues where settings like proxy configurations were not saved correctly or custom UI elements (like userChrome.css ) became garbled. particularly on Windows systems.

: Significant bugs in version 11.0.1 caused many browser extensions to break and led to frequent crashes, particularly on Windows systems.