We have a Win7 client communication with a Win10 server(virtual machine). The Win10 server is not a Windows Server but rather a Win10 VM acting as a server.
The Win7 client communicates fine with a Win7 server(physical machine). We see the protocol sequence exhibiting correct behavior. SYN SYN, ACK ACK PSH,ACK ACK, PSH,ACK
In the case of the Win7 client communicating with Win10 server(virtual machine). We see the protocol sequence exhibiting incorrect behavior. SYN SYN,ACK ACK, PSH,ACK ACK <expecting a="" psh,ack=""> here - albeit not receiving one - hence causing test failure.
We have removed firewall rules on both client and server machines and same symptoms persist. Client and server are on different subnets.
Question: What might cause the client not respond with a PSH, ACK? All works fine when it's Win7-Win7 but fails when it's Win7-Win10.
Thanks.
