Bifold Doors Frosted Glass - In regards to maintaining your house in tip top shape, nothing can be more annoying than the usual sliding glass door that will not slide.
The number 1 reason your sliding glass door will not side is because too much dirt and debris have clogged the path of your door panel and the wheels up. This really is not a hard fix, but it's best if you've got another person present to help you because most sliding glass doors are quite heavy.
When the door is on its side, you are able to carefully analyze the wheels and the track. Mostly, you will discover the wheels are full of soot and debris, and the course can be likely very grimy. Use compressed air and needle tip pliers, to clean the wheels. Take care to pull every last hair out of the wheel bearings. It is best to be diligent in this measure, so you don't have to make a habit of this process.
While you are at it, clean up all the "mating-borders" of the doorway. This is where the sliding door and any other surface of the door frame meet. A general rule of thumb is to simply wipe down anything that appears dirty. Don't forget, even if the dirt isn't necessarily on the path itself, it can eventually fall to the trail causing your door to need another wipe down.