I am using Bitdefender Internet Security and Outlook 2013 to connect to my Outlook Hotmail exchange activesync (Office 365) account.
When the firewall is off, it works fine. When the firewall is on, it doesn't work.
Support had me try changing the adapter LAN settings to Home/Office Stealth: Off and Generic: On
Also tried to disable SSL Scanning for web protection and Anti-Spam.
None of those options worked. The only thing so far is to turn off the firewall.