When I open a lobby after about 10 seconds or so it closes automatically and brings me back to the lobby browser.
When I am hosting a custom game lobby, I am just dropped after 10 seconds (everyone who is fast enough to enter the game, dropped with me) to the list of hosted games. Same situation with any maps that I tried, even just classic maps. I have tried to delete all maps, tried to delete Warcraft 3 and delete every file that was left after it (and cleaned everything in the registry), and reinstalled it. No changes.