When my users connect from home to the http://owa.mail.x/ no problem. They open few messages no problem. Some messages they try to open from home says This page can't be displayed, error 404 file not found. Even I am sure the message exist and if they logoff OWA and try again they can access that message but after opening few messages they run into a message again to say this page can't be displayed. And at times the OWA stops responding till they close the browser, even there is not time of inactivity which might be a reason for auto log off, they are active reading messages but this happen. Any idea? thnx