# Smart AMS is unable to establish a connection with controller

Cause | Solution
--- | ---
Networking is not installed or is not properly configured. | Check your network configuration.
Connection cannot be established because IP addresses or ports are wrong. | Check that the IP address and port number specified in Smart AMS Config match those in the controller.
Smart AMS Manager has stopped responding. | Restart the SAMS service that is listed in Windows services on the computer.