The answer to 'why is my GFCI outlet not working' is that there are several common causes, including a tripped GFCI, a wiring issue, or a faulty GFCI device. GFCI outlets are designed to trip and cut power when they detect a ground fault, which can happen due to moisture, a short circuit, or other electrical issues.
Some common symptoms of a non-working GFCI outlet include no power, the GFCI test button not working, or the GFCI constantly tripping. Solutions can include resetting the GFCI, checking for and fixing any wiring problems, or replacing the GFCI device itself. If you're not comfortable troubleshooting electrical issues, it's best to call a licensed electrician to diagnose and repair the problem.