I had this problem quite a lot a few months ago and then it stoped for a while but now its started again.
First i can sign into msn fine and talk to people then it just stops delivering my messages and nobodys messages get to me. I dont get an error or message cant be deliverd. Nothing.
When i try and sign out then sign back in trouble shoot comes up with error code 80072745. When i hit repair it says my host files need cleaning but no matter how many timesi say yes to clean them it still highlights it as the problem and wont let me sign in.
My internet connection is working fine and my computer is fully up to date and virus's free.