Message récurrent de Norton Antitrack

What browser? Firefox?
~ may be related:

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As of early 2026, the primary issues with Norton AntiTrack and its Firefox extension involve persistent update loops, detection errors between the app and browser, and significant performance slowdowns. Users have specifically reported that even after successfully updating, the Firefox extension repeatedly prompts for the same update, a bug currently being addressed by Norton in collaboration with Mozilla.

Persistent Update Prompts (Firefox): A widespread issue where the AntiTrack plugin for Firefox keeps requesting an update to the latest release every time the browser is launched, even if the update was just completed. Norton has identified this as a known situation across browsers and is working on a new build (v4.8.0) specifically for Firefox.

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Norton AntiTrack does not detect browser installed on the computer here

Note: at this time: Norton AntiTrack Firefox extension = v4.6.0.4373
https://addons.mozilla.org/en-US/firefox/addon/norton-antitrack/

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Caveat: I do not run Norton AntiTrack

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