text: how can i get yahoo messenger to accept my sign in? i have had yahoo messenger installed.  it worked one time.  the next time it would'nt accept my sign in.  i had it reinstalled twice and it still won't accept. what am i doing wrong?  i keep getting the window telling me "sorry we cannot connect you to messenger" it might be possible that you have a firewall not letting yahoo! messenger access the internet, but if it worked once...then i don't know why it wouldn't work again. just be sure your user name and password is correct, if that doesn't work contact yahoo! also, i just found this link, check sources below. that should hopefully help.