Upvc gearbox failure most common multipoint lock is damaged door alignment issue problem with lock cylinder door lubrication is required.
Upvc door will not lock.
Takeaways don t try to forcefully lock or close the door.
Make sure adjust all of your upvc door s hinges otherwise it still won t close and lock properly.
If your upvc door won t lock even when still open this is usually because of the following reasons.
This will cause only further damage and make repairs harder and costlier.
Look on the side where the handle is you will see packers on the top and sides try and get a couple of packers and lift on the handle side about 3 4mm and if the door will lock then make sure you don t use anything metal to lift the door and check to see if any packers have slipped down the side of the glass.
If you have any lock mechanism issues it s best to leave the repair.