s! (%1!s!) is online but isn't responding to connection attempts. The remote computer isn't responding to connections on ...

%2!s! (%1!s!) is online but isn't responding to connection attempts.
The remote computer isn't responding to connections on port %3!s!, possibly due to firewall or security policy settings, or because it might be temporarily unavailable. Windows couldn't find any problems with the firewall on your computer.