You receive the

vSphere client could not connect with the vCenter Server

error message when you attempt to connect to the

Virtual Center using a remote VMware vSphere Client

I received this error message after a system restart to complete the installation of the some Windows updates.

Fortunately it was nothing major – just 2 services that had failed to start.

Just ensure that the VMware VirtualCenter Management Webservices and VMware VirtualCenter Server services are both ‘Started