Denied agents appear in Workstation. According to the agent log, the agent is connected but it is in disallowed mode.
The following items are possible reasons for this occurrence:
Application Performance Management 10.7 release.
Review loadbalancing.xml configuration and syntax. If needed revert back to a default Out Of The Box file.
Make sure the IntroscopeEnterpriseManager.properties and apm-events-thresholds.config.xml have the appropriate values for clamps in your environment.