SOLVED: Something Fishy with Jellyfin

[TheDreadPirate]

Since you are running jellyfin as admin now, and you likely weren't before, you will need to re-enable the setup wizard since your jellyfin data directory is not located where it is now.

Stop Jellyfin then open up this file in notepad.

C:\ProgramData\Jellyfin\Server\config\system.xml

Near the top there will be a line called "IsSetupWizardComplete". Change that from true to false then start Jellyfin. It should walk you through setup, including creating a new admin account.