Your first step is to determine what is causing the door to not slide. Here are some common causes: -Dirt and debris on the tracks -Loose screws or bolts on the track -Damaged or misaligned tracks -Clogs in the track from dirt, hair, or other objects Once you've identified and fixed the cause of the problem, your sliding door should be good as new.

A common problem with sliding doors is that the track gets dirty and gunked up with dirt, dust, and hair, which makes the door difficult to slide. To clean the track, use a vacuum cleaner to remove all the debris, and then wipe it down with a wet cloth. If the door is still sticking, you can try using a lubricant like WD-40 to help it move more smoothly. Just spray a little bit of WD-40 onto a cloth and then wipe it down on both sides of the track.