VMware vSphere Client errors on Windows 7

Trying to start VMware vSphere Client on Windows 7 to connect ESX / ESXi machine or vCenter, throws two error boxes: Could Not Connect — Error parsing the server “vcenter.lan” “clients.xml” file. Login will continue, contact your system administrator. and Error — The type initializer for ‘VirtualInfrastructure.Utils.HttpWebRequestProxy’ threw an exception. Searched VMware forums without any …