A "fatal error" is a mistake or problem that is so serious that it causes a failure or crash that cannot be fixed or recovered from.
Sentences with «fatal error»
Many brokerages try to use the Web to their advantage, but make fatal errors. (realtormag.realtor.org)
You must be careful in crafting yours to avoid fatal errors. (resume-now.com)
Full implementation of currently available safety features across all vehicles can move us in this direction with less publicity around fatal errors. (greencarcongress.com)