Verify that the Administrator Username and Authentication Phrase are the same for PowerChute and the NMC.
Verify that UDP port 3052 is not being blocked by a firewall.
Check the IP settings on the PowerChute machine and on the NMC user interface to verify that the default gateway and subnet mask are correct.
Check that the IP address of the Network Management Card has not changed after PowerChute was registered with the NMC. To check this, click on the Communications Settings menu item in PowerChute and check that the IP address shown in the Network Management Card section is correct.
Verify that there is a network connection between the PowerChute client computer and the Network Management Card. Attempt to access the Network Management Card from the PowerChute client computer, or use the ping utility from the Network Management Card.
A PowerChute Network Shutdown client that acquires its IP address through DHCP will lose communications with the Network Management Card when the client renews its DHCP address lease and acquires a different IP address. To resolve this issue,each system using PowerChute Network Shutdown must have a permanent IP address. Reserve IP addresses in the DHCP server by using the MAC address of the clients, so that they never change for the specified machines. The NMC should also have a static IP address.
Verify that the PowerChute service is started. If it is already started, stop the service and then restart it again.
Update the firmware on the NMC to the latest version which can be downloaded from the APC Web site, or contact “Customer Support”.