The trust relationship between this workstation and the primary domain failed

I am trying to access the school computer login, why is it like this?

@Muz,

Have you tried placing that message in your favorite search engine? There are many articles that outline steps that you can take to resolve this situation.

If you have already done this, could you tell tell us what you have already tried so that we can refrain from suggesting things you have already tried?

I hope that this helps!