Recently, I found one of my client's Outlook is always stuck or freezing on startup. He cannot access to his email at all. No matter what he tried.
What I found out is that he is using ESET Smart Security 7, it has building Firewall function. So, after I disable the firewall function in ESET. Everything back to normal. So, be careful such Antivirus and Internet Security combined software. Sometime, it can be very ignoring. If you have similar outlook problem, it's a good idea to temporary disable your security software or antivirus software to see if there is a effect to your Outlook or not.
Beware these software:
ESET Smart Security
Vipre Internet Security