The "...no more endpoints available for the endpoint mapper" error indicates either a name resolution or other networking problem. Frequently, this is caused by inappropriate management of the Windows Firewall in the operating system. In many cases, it is not an issue to have the Windows Firewall enabled as long as the necessary Pharos ports are "white listed" or enabled. If the Windows Firewall is to be disabled, however, it is best to accomplish this using Group Policy (see the Microsoft TechNet article at http://technet.microsoft.com/en-us/library/bb490626.aspx) when in a domain environment. Alternately, use the most appropriate method available within another Microsoft TechNet article, found at http://technet.microsoft.com/en-us/library/cc766337(WS.10).aspx.

Again, in previous versions of the Windows Server operating system (notably Windows Server 2003), one could simply disable the Windows Firewall service. This is not the supported method in Windows Server 2008. This, from "I Need to Disable Windows Firewall" (http://technet.microsoft.com/en-us/library/cc766337(WS.10).aspx):

 

CautionCaution
Do not disable Windows Firewall by stopping the service. Instead, use one of the preceding procedures (or an equivalent Group Policy setting) to turn the firewall off. If you turn off the Windows Firewall with Advanced Security service, you lose other benefits provided by the service, such as the ability to use Internet Protocol security (IPsec) connection security rules, Windows Service Hardening, and network protection from attacks that employ network fingerprinting. For more information about Windows Service Hardening, see http://go.microsoft.com/fwlink/?linkid=104976http://go.microsoft.com/fwlink/?linkid=104976. Non-Microsoft firewall software that is compatible with Windows Vista and Windows Server 2008 can programmatically disable only the parts of Windows Firewall with Advanced Security that need to be disabled for compatibility. You should not disable the firewall yourself for this purpose. Stopping the service associated with Windows Firewall with Advanced Security is not supported by Microsoft.