No doubt that Outlook is one of the best and most used email application. Where it gives several features and compatibility, user’s have also suffer from some annoying issue. While working on Outlook if you don’t pay attention then you might have to face error message. Outlook MS exchange server is unavailable error is one of the disturbing error message which none of the Outlook user want to encounter. However, sometime this error message get resolved automatically but in most of the cases it become complex. If you have also encounter the same error message and want to fix it then carefully read this guide.