When something is not used very often, it might become useless without previous notice.

Out of order (sth does not work)

Out of date (old and not fashionable)

Out of date (not useful or correct)

Out of practice (no recent experience, not enough experience)

Panic  attack (a sudden period of severe anxiety in which your heart beats fast, you have trouble breathing and you feel as if something very bad is going to happen)