PLCSim runing on PC and connect via TIA Portal from other PC?

Hello,

I found some information and a post, that is possible to connect from another PC to PLCSim Advanced runing on other PC. 

I have only Version "PLCSim" (no Advanced) and I've tried this solution.

So I connected 2 PC's, both are in the same IP-Area. Both PC's are working over virtual machine (vmware). On the first I open PLCSim (it's runing -everything is good). On the second PC I have TIA Portal but the connection to the PLCSim is not working (no simulated PLCSim can be found). 

The Ping-Command from Windows is working, so I can ping the simulated PLCSim from other PC. 

Is there some information for this solution? 

Or what can I do/test?

Best regards