The problem is that YouTube does not load me in Windows Live Messenger and I try with scripts such as Youtube Info, YouTube Viewer and YouTube Launcher and none works. I have The version 8.5 of WLM Downloaded On Escargot. There is another script or a solution to load YouTube in WLM.
I know both of the people who made the scripts you mentioned. With the Viewer, it requires a server my friend is no longer running, with the Launcher, I didn’t do a whole testing session, but I believe the only part that will work is opening links up in a default browser, which Messenger can do anyway.
As for the other part of it, Messenger itself can only make use of Internet Explorer, and I think you be better served using a real browser to view YouTube (especially with SponsorBlock).
What sort of YouTube feature are you looking for though?