Appeared to be possibly addon or Antivirus related.
Oh my… several reports of PC players unable to login after the game update today.
— BenevolentBowD.🇨🇦 | ESO Calendarmancer (@benevolentbowd) March 14, 2022
Check these forum posts if you have issues.#ESO #ElderScrollsOnline #TESOnline https://t.co/VuGVlb8FiThttps://t.co/J4vG55CdX4
Update from Zenimax Online: https://benevolentbowd.ca/games/esotu/eso-matt-firor-addresses-update-33-issues/