I wanted to delete Facebook account from my Lumia 520 (or at least to log out), i tapped facebook account in EMAILS+ACCOUNTS, clicked delete but i gets me back to previos screen and says ATTENTION REQUIRED bellow Facebook account. After that I clicked on Facebook account and I got information about this error "Error code: 0x83cf1105". Does anyone know what the problem is and how can I delete (or log out) my facebook account? Thanks in advance!