I was repeatedly having an issue with the FFXIV launcher. The launcher would stop responding right after I entered my user id and password. After some Google searching I managed to find a few people alluding to updating the Microsoft .NET Framework. After the installation and a reboot I was not having the issue anymore. Hope this helps anyone who is having the same issue.

Included is the link to the Microsoft .NET Framework Web Installer. Cheers!

http://www.microsoft.com/en-us/downl....aspx?id=17851