Tor Browser 11 removes V2 Onion URL support, adds new UI

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Aug 17, 2014
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The Tor Project has released Tor Browser 11.0 with a new user interface design and the removal of support for V2 onion services.

What's new in Tor 11​

Tor Browser 11 uses Firefox ESR 91, which brings an updated user interface containing new icons, a new toolbar, streamlined menus, dialogs, and an updated tabs interface.

New Tor 11 icons

New Tor 11 icons
Source: Tor Project

However, the most significant change is the deprecation of V2 onion services, meaning TOR URLs using short 16 character hostnames domains are no longer supported.
When attempting to open a V2 onion service, Tor Browser will show users an "Invalid Onionsite Address" with an error code of 0xF6.

V2 Onion services are no longer supported

V2 Onion services are no longer supported

"Last year we announced that v2 onion services would be deprecated in late 2021, and since its 10.5 release Tor Browser has been busy warning users who visit v2 onion sites of their upcoming retirement," the Tor Project explained in the Tor Browser 11 release notes.

"At long last, that day has finally come. Since updating to Tor 0.4.6.8 v2 onion services are no longer reachable in Tor Browser, and users will receive an “Invalid Onion Site Address” error instead."