I am running Office 2013 and Malwarebytes Pro seems to be blocking the connection to outlook.office365.com - It will work fine for a few hours and I will receive a "can't connect to Microsoft Exchange" error message. I have been systematically narrowing down what is the cause and ended up if I turn off the Malicious Website Protection, I immediately connect back to Microsoft Exchange.....until I turn MWP back on. I have tried to add https://outlook.office365.com to the "Web Exceptions" section of Malwarebytes Pro, but that does not solve my issue. Any help would be greatly appreciated. Thanks!