Can't Ping Individuals with CMD

DearNull Byte users,

In order to perform certain actions I want to first ping an xx.xx.xxx.xx IP of a random individual or test environment. When i use 'ping IP' I get 100% packet loss which means of course means no package has been received.

Why is this? And how can I fix this? Friends of mine have no problem pinging me for example.

A couple observations:

• I suspect this has something to do with my router? (port forwarding or something like that)
• I can ping google.com just fine with o% package loss.
• I tried disabling my firewall but this does not change anything
• I tried adding ICMPv4 into my inbound firewall exception but this does nothing.