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Firefox Default Browser Agent

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My Windows Task Scheduler contains an entry called "Firefox Default Browser Agent". If I delete it, it returns. If I disable it, it re-enables itself. Can't be modified either. How do I turn it off permanently?

I already have telemetry and automatic updates both turned off.

In about:config default-browser-agent.enabled is set to false

My Windows Task Scheduler contains an entry called "Firefox Default Browser Agent". If I delete it, it returns. If I disable it, it re-enables itself. Can't be modified either. How do I turn it off permanently? I already have telemetry and automatic updates both turned off. In about:config default-browser-agent.enabled is set to false

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The Default Browser Agent scheduled task is not optional, the settings can disable functionality but not the task itself.

The list of reflected prefs includes the global telemetry opt-out pref datareporting.healthreport.uploadEnabled and a pref called default-browser-agent.enabled, which can enable or disable the entire agent. The agent checks these registry-reflected pref values when its scheduled task runs, they do not actually prevent the scheduled task from running.

https://firefox-source-docs.mozilla.org/toolkit/mozapps/defaultagent/default-browser-agent/index.html