Ditched Firefox for LibreWolf and I'm much happier. Firefox, despite all my efforts known to man, was forcing a download that I clicked accidentally because it nags every damned day to update.

Usually I don't.

I was planning to click there just when it popped up. Scummy behavior, then it downloaded the update to programdata.

No matter how much I deleted, uninstalled, cleaned the registry, cleaned every reference I know of, appdata, local, roaming, locallow, program files....just everywhere, it still restored the new download in programdata when I opened the browser.

Somehow even without internet and installing an old version because I don't want AI features, it still stored somewhere secretly on this machine, that it should immediately download the update. It stored it in the profiles.ini, it created the target for download in the programdata. AND it would not let me disable the updates in Settings in the browser.

Actually it would let me disable it, until I closed and reopened the browser, and it was magically re-enabled.

FUCK THAT NOISE.