It sounds like you device has a host based firewall that simply blocks all inbound connections, including ICMP.
One other thing to check is that all the devices in this network are using the correct subnet mask.
One IP address does not respond to ping
It sounds like you device has a host based firewall that simply blocks all inbound connections, including ICMP.
One other thing to check is that all the devices in this network are using the correct subnet mask.