Thanks #Microsoft for KB5079473 breaking Store, Outlook, Teams, To Do, etc with error code 0x800704cf. I've been fighting issues with this for a week now. https://www.pcworld.com/article/3094619/windows-11-update-breaks-microsoft-app-logins-try-this-workaround.html
Windows 11 update breaks Microsoft app logins. Try this workaround

After the March update for Windows 11, some users are unable to log in to apps like Teams, OneDrive, and the Microsoft Store.

PCWorld
FYI if anyone else is facing this, a week and a half after Microslop broke its own logins, it has issued KB5085516 to fix it.