I can login to Character selection, but when I choose a character it gives me loading screen and then i get back to login screen with "Unknown error has occurred"
Hey, @t0bi. If you have any add-ons running, please try disabling them as they may be contributing to this issue.
We also recommend (if you haven't already) adding the launcher, eso.exe, and account.elderscrollsonline.com as exceptions to your firewall and anti-virus software.
If you are still encountering this error, please let us know!