Tighten the hinge screws and then try adjusting the strike plate by loosening its screws and shifting it slightly.
They dont make my door handle anymore.
You can make sure that it is the latch by looking at the strike plate and noticing if the tongue sets in the strike plate correctly.
When this happens the door does not shut and opens up at any time.
Now try closing the door and give it a push.
Tap the end of a chisel under the door stop on the striker side of the jamb.
If it won t lock open the door.
Sure you could do this yourself each time you close the door e g lift up on the door as you close it to force the latch bolt up into the latch bolt hole but let s do the right fix and do it one time.
Using a phillips head screwdriver tighten all door hinges so that none is loose.
Door lock doesn t latch properly when a door latch doesn t click into position it usually means the latch and the strike plate are out of alignment.
Pry up on it until it comes loose and remove it.
Warping if the door cannot physically lock due to the frame or door being warped an adjustment of the strike plate could rectify the problem without the need of a new lock.
Shut the door and try to lock it.