You can try this step before taking the handle off.
How to fix a stuck front door lock latch that won t retract.
The fix in instances with a door latch stuck because it is jammed by rust and other materials it is always best to disassemble the lock and do a bit of cleaning.
Release the button quickly try sliding your finger off the button so the pressure is maintained up until the precise moment of release with no backing off.
Letting the components sit fully submerged in a vinegar of about 5 acidity will do the job of separating the gunk from your metal.
Take a 2 liter coke bottle and cut out a strip about 2 inches wide and 4 inches long.
If this is the problem you can try to fix it by closing the door and closing the handle of the knob simultaneously.
Use the screwdriver to lever the latch out of the door.
Tighten the hinge screws and then try adjusting the strike plate by loosening its screws and shifting it slightly.
If that does not work you can try picking the door up off the ground while turning the lock.
A door knob lock button stuck has a few quick fixes that you can try out.
Start by trying to push the lock button.
If you re lucky this will force the latch back.
If it won t come out this is sometimes the case with stuck latches insert your screwdriver into the latch at the point where the door knobs intersected with it.
The friction can make the latch unable to retract.
Push and hold the button in.
Once you ve removed the handle you can try to manually open the latch with either a pair of needle nose pliers or a large flathead screwdriver.
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.
This can be done with a screwdriver flat or phillips to remove all screws of the door handle s plates.
Now take that piece of plastic and try to insert it into the door from the outside directly where the latch is.
If this doesn t work then you re going to have to resort to removing the door from the hinges.