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hi team,   we habe insatlled agent on a server which one MS CRM on prem application and two .net applications it was working fien while deployement and after some time it stopped working we cannot see the data generation on SAAS. this is second time, we are not sure whats the issue . we have below logs. please go through and advcie what can be done....     Warn MachineAgentManager Metrics Problem registering metrics: System.Exception: Connection back off limitation in effect: Warn MachineAgentManager Metrics Error sending metric data to controller:System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required. Error MachineAgentManager Metrics Error sending metrics - will requeue for later transmissionException: com.appdynamics.ee.agent.commonservices.metricgeneration.metrics.MetricSendException: System.Exception: Connection back off limitation in effect: https://xxxxxxxxxxxxxxxxxx:443/controller/instance/4233/metrics_PB Warn ConfigurationChannel Could not connect to the controller/invalid response from controller, cannot get initialization information, controller host [xxxxxx.appdynamics.com], port[443], exception [System.Net.WebException: The remote server returned an error: (407) Proxy Authentication Required. ... View more