SnapCenter Plug-in package for Windows (HPPW) 4.x Upgrade for SnapCenter Plug-in is failing: System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No...SnapCenter Plug-in package for Windows (HPPW) 4.x Upgrade for SnapCenter Plug-in is failing: System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it <IP_Address>:8145 The installer log shows the following error: Enable the NTLM traffic from local security policy settings to validate the credentials and proceed with installation.