Today I don't know why I want to frantically go through all the Edge folders in File Explorer, Then I find something strange. I go to C:\Program Files (x86)\Microsoft\EdgeCore, Seeing that there are several folders inside, then I open each one to see. Some have a lot of stuff stored in it, and some have only one .dll file. And what I'm going to ask today is this .dll file what exactly is it? It says "telclient.dll", but I can't tell from its name what it really is. I went back to the EdgeCore folder and found this .dll file loaded in a folder of an older version of Edge. Could this is be the data left over after the Edge update? I just only want to know what it is.