Verifying the ExtendSimLicServer is running as a Service.

Go to Computer Management on the License Server.
In the list that appears, double-click Services and Applications, then double-click Services.
In the list that appears, scroll to ExtendSimLicServer and verify it is Running.
If it is not running, you may need to install the License Manager with Administrative privileges, temporarily disable virus protection and other security features before installing it, or unblock the ISV port.