New windows 8 desktop PC.

Been using Outlook.com for just a day on the new one. Before that been still using outlook express on my old win xp machine. Never a problem.

On the win 8 PC it is locked in some sort of loop. Looks like it is working on something. With a little blue circle spinning around. Been doing this for an hour and can't find a way to stop it.

Tried rebooting the PC, turning off Avast anti virus, nothing works. Started doing this when I just tried to delete a message. Now can't do anything.

But outlook will work ok if I sign in with my old win xp PC,

Any suggestions to stop it. Could I install Windows Live and get that to use instaed.

Thanks