Went to a classroom to look at some problems in a lesson. Child reports they can't log in. it comes up with the wrong login error. Check the obvious things ~ network cable. Yes it's in and the lights are on. Try to log in with our test pupil account.

no that doesn't work either.

wait a minute there's something wrong with typing the password in.

The 3 key doesn't work.

By sheer luck the child's and our test pupil account password both have a '3' in.

Lucky because if I'd have gotten logged in I would have insisted the pupil was typing their password in wrong!