The PerformancePollingStopped event indicates loss of packets when CUOM is polling the call manager or device in question. If the alert is continuously occurring, it could be an issue with the https credentials or service on the CUCM. However, if the alert occurs sporadically and the
device is able to be polled the rest of the time, then it could indicate latency issues in the traffic between the CUOM and the CUCM at the times that the alerts occur.
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Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.