If you are able to gain access to the interior of the room through a window or some other means this is usually the easiest way to remove the lock.
How to remove lock barrel from upvc door without key.
In this video you will see how y.
Simple to replace or change a security door lock without key.
Then insert the key into the lock and turn it about 10 degrees to line up the inner latch of the lock with the body of the lock.
Thankfully it s left open but i want to remove the cylinder and replace it.
Many homeowners have old doors somewhere in the house that they no longer have the keys for.
To change a upvc door lock start by unscrewing the retaining screw which is located on the faceplate on the side of the door.
If these doors are locked it can be difficult to remove the lock and replace it with a unit that works.