If your doors hang from a top rail and do not have a track on the floor then you need to either replace or tighten down the floor guides.
How to fix a stuck sliding closet door.
Now precisely where on this part of the door frame does the sticking occur.
These rollers can become damaged dirty or broken as the years go by and cause your door to stick.
To fix this remove your door from the tracks clean out the rollers and spray them with a lubricant such as wd 40.
The first thing to check is what type of rail system your sliding closet door uses in order for it to slide.
Sliding doors move along the tracks using a set of rollers.
Maybe its your sliding track maybe slider wheels.
See if the screws holding the guides down need tightening to be more secure.
Determine where the sticking is happening.
If the sticking area is along the door frame where the hinges are located.
Most of the time the problem stems from dirty and dried up rollers.
If it s a matter of friction on the strike plate try.
The home mender dustin luby shows us how to fix that ancient pesky problem my slider doors wont slide.
On the top middle or bottom.