I've run up on a problem registering one of our ISR 4331's with WCM. I get the error message in the subject line after adding the router as an AppNav controller. WCM is running 6.4.1a and the IOS on the router is 16.6.3. I've got 10 other of the same model and IOS version of the router that I've successfully added, but for some reason this one continues to fail with the same error message. Short of rebuilding it from scratch, I'd appreciate any insights others may have in overcoming this issue.
