Do you have some more specific information?
Log files? Do you see the loading bar, how much Procent? Is this at all games when you log in or just local. Your server or a server?
Englisch is not my Favorit lang.
Come up the game in the tastmanager?
Mey by an Java 9(RW not souport) update? Or a nother Windows update?
Please try to delete the "launcher" subfolder in the "data" folder in your game directory, then start the game again. Does the issue still persist?
Did you delete the "launcher" subfolder? After starting RW, did you wait until the download was completed (it's necessary to download a few hundred mb for the update, this can take some time depending on your internet connection)?
In case of doubt delete the whole "data" folder and run the game again (in case some files were corrupted).