Even though it sounds like a simple problem, a lot of our customers have asked the question why they can’t get back ping responses from their MS Windows servers. The problem is simple, because on most flavors of MS Windows boxes, the firewall has disabled ICMP requests by default.
To enable it, go to Start > Administrative Tools > Windows Firewall With Advanced Security
Now go to Inbound Rules on the left pane of the new window, and find the File and Printer Sharing (Echo Request – ICMPv4-In) from the rules. Enable it by right clicking. Now, your server will respond back to ping requests from IPv4 packets. You can also enable this for IPv6 from the rule right below it.