Repair Superior French Door Lock
If this is the case you may need to remove the entire doors so you can renew the holes.
Repair superior french door lock. Loosen and remove the machine bolts that secure the lockset at the inside face of the door using the appropriate screwdriver. Open the operable door using the knob or lever handle. French door replacement parts and accessories. French door repair including the multi point lock mechanisms and adjustments.
Disassemble the door knob that contains the lock on the french doors using a screwdriver to loosen and remove the bolts so that each half falls away from each other. If the french doors have dropped due to loose screws in the hinges attempt to tighten them before you test the doors again. There are many different parts and pieces so taking a few pictures of the part in question as well as any information. The more you use your french doors the more likely the thread of the screws will drag against the walls of their casings and loosen.