My GFCI breaker is tripped and won't reset. What should I do?

When a Ground Fault Circuit Interrupter (GFCI) circuit breaker installed directly in your main electrical panel trips and refuses to stay engaged when you attempt to reset it, you must follow a careful troubleshooting sequence. First, unplug all appliances and turn off all devices connected to every outlet protected by that specific breaker to eliminate active short-circuit loads. Second, firmly toggle the breaker handle fully to the "Off" position to reset its internal mechanical trip latch, and then push it firmly to "On". Third, if it trips instantly again, there is a permanent short circuit or ground fault on the main branch wiring. You can troubleshoot panel faults safely. You can verify that your corrective action is successful when disconnecting downstream loads allows the breaker to hold position, proving that a specific appliance or wiring fault caused the original trip.