Solving Netconf Problem in DNA Center

I'm sure a lot you have seen this warning:

This may be the reason for several problems in the daily operations. E.g. no devices are listed when you want to register new devices for the licensing portal.

If you follow the instruction you will notice, that the problem still exist.

Let me show you how to solve the problem.

by clicking Devices that have not been discovered with NETCONF a filter will be created

In this scenario I´ll try to fix the 10.76.0.2.

First of all, check if netconf is enabled on the devices

9300-Border#show netconf-yang status
netconf-yang: disabled
netconf-yang candidate-datastore: disabled
netconf-yang side-effect-sync: enabled
netconf-yang ssh port: 830
netconf-yang turbocli: disabled

if disabled, enable it with netconf-yang

9300-Border(config)#netconf-yang

9300-Border#show netconf-yang status
netconf-yang: enabled
netconf-yang candidate-datastore: disabled
netconf-yang side-effect-sync: enabled
netconf-yang ssh port: 830
netconf-yang turbocli: disabled

Now note the port and edit the device over the menu within inventory

Enter the port number you had checked bevor:

Now you can follow the proceed as described in the Alert.

Update the Telemetry Settings, force the configuration push and re-provision the device.

Finally check if the device is not listed anymore, when you click on Devices that have not been discovered with NETCONF or if the whole Alert disappeared.

I noticed this Problem a lot recently and i hope this can help you!