My device is not responding - Gateway 1.4.0

There is an intermittent issue in Gateway 1.4.0 where some or all devices report The <device> is not responding when they are actually online.

If you see this error, and you have confirmed the devices are online, check the log to confirm the error.

To confirm the error: Go to C:\Program Files\EcoStruxureITGateway\1.4.0\log on the computer where the gateway is installed, or log in to the gateway and download the console logs. Unzip the file and look at the newest console log.

This entry will appear in the gateway logs:

softwareVersion=1.4.0.68, originalMessage=protocol mapping error
com.se.dcl.ddf.MappingException: no protocol type: PreCompiledMapping{resource=URL [jar:file:C:\ProgramData\EcoStruxureITGateway\1.4.0\ddfs/ddf_bundle/default/se-ddf.jar!/ddf/SNMP/protocol.xml], signed=true}

Solution: Restart the EcoStruxure IT Gateway Service.

1. Go to Control Panel > Administrative Tools > Services.
2. Restart the EcoStruxure IT Gateway Server service.

This issue will be addressed in the next release.