When you try to install Microsoft Dynamics CRM Client for Outlook on Windows 8 or Windows 8.1 you bump on the following message:
There is a problem communicating with the Microsoft Dynamics CRM Server. The server might be unavailable. Try again later. If the problem persists, contact your administrator.
First I have found KB Article ID: 2502671 here http://support.microsoft.com/kb/2502671 that suggests fixing clock on the client odr the server and fixing host header on the IIS server where CRM is actually hosted. It was none of that so I looked elsewhere. The problem was in Windows Identify Foundation feature in Windows 8/8.1, if you enable that feature in features and programs in control panel everything will work as it should and you will be able to select your server and organization.
My Windows Identify Foundation is also enable still facing this problem
Enable the Exchange and CRM server to have synchronization email, Task and contact.
Configure SQL Server and disable cache files and give it try.