Strikeplate - door won't catch

my door won't catch - seems like the knob mechanism and strikeplate are not longer aligned. is there a way to adjust?

 

The last thing you want to do is move the strike plate. That only bandaids a larger problem. It is possible the door frame has settled, and needs to be lifted slightly on one side or the other. If the strike bolt strikes low, place a shim under the hinge side of the frame and drive it under slightly, keeping an eye on the alignment of the bolt. Just the opposite if the bolt is hitting high on the plate. If this is a solid door, make sure there are 3 inch screws in at least two of the hinge holes on the top hinge. This will correct sagging due to the weight of the door. Wouldn't be a bad idea to do that anyway. Post back to let us know how it works.

 

I agree with Chandler. Close the door and see if the gap along the top has changed. If the latch is not in the middle of the strike plate, then it's likely that either the door has sagged, or that side of the jamb is sinking. If the gap across the top of the door is wider on the latch side than it is on the jamb side, your door has sagged just enough to make the latch no longer catch. Replacing one of the short hinge screws with a long screw that goes back into the 2x4 framing will usually pull up a sagging door.