How can I undo the "Never ask me again" setting when I click the "New identity" button?

Question

When I click the "New Identity" button in Tor browser, there's a prompt

Tor Browser will close all windows and tabs. All website sessions will be lost.

Restart Tor Browser now to reset your identity?

[ ] Never ask me again

I accidentally chose the "Never ask me again" and click [Yes].

Now I want to get the prompt back. How can I do that?

Answer 1

Method 1: Use about:config page

• Type about:config into the navigation bar of Tor browser, accept the warning
• Search for extensions.torbutton.confirm_newnym option, change the value to True

Method 2: Modify the preference file in Tor browser directly

(not recommended! See the comment at the top of the file)

Open the file

tor-browser_en-US/Browser/TorBrowser/Data/Browser/profile.default/prefs.js

There should be a line:

user_pref("extensions.torbutton.confirm_newnym", true);

Change true to false.

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_{I searched in Tor preferences window (and on the Internet) for a while and can't find anything related. Do post another answer if there's a simpler method.}