WLX - Windows Live Mesh Sync File comes along with an extension that can be used for temporary file creating. You will also be able to synchronize different files between various computers. This extension can also be used to mark a simple file that has to be installed from one location to the next. This file extension also creates a temporary file which can and will show up directly in the directory. Once everything is complete, you will be notified and the WLX file will then be removed. It does make a lot of sense once you begin to use this program more often. If you are someone who likes to transfer data and files from different devices then you need to make sure that you use this file extension to benefit you.