I am getting a error message when I am trying to open outlook on my system. I am using Outlook 2007. There was some issue with MS Exchange. It is not working. The connection between outlook and exchange is somehow lost due to which I am getting the error. First when I launch Outlook I am getting a message that outlook must be online. When I click on OK I got the error message that exchange is not available. I had added the exchange server address and other login details. But still the same error. It was working well last night.