This tip explains how to overcome an error raised by a bug when uninstalling Exchange 2013.
When you uninstall Exchange 2013, you might encounter the following error in the Event Log regarding the Managed Availability’s monitoring agent complaining that the server you uninstalled is not available:
The problem is that the old server continues to be present under the following registry key for all other Exchange Servers:
This causes the error above in the Event Log or SCOM alerts. If this happens, the workaround is to simply delete the old server(s) from the registry key mentioned above on the remaining servers.
Microsoft says that this bug was previously closed as Won’t Fix but that they have re-opened it for re-triage.
Log Name: Microsoft-Exchange-ManagedAvailability/MonitoringSource: Microsoft-Exchange-ManagedAvailabilityEvent ID: 4Task Category: MonitoringLevel: ErrorDescription: Machine “uninstalled_server” has failed to heartbeat since “unistalled_date_and_time”, as observed by machine “some_other_server”. Restarting the Exchange Health Manager service did not fix the problem.The problem is that the old server continues to be present under the following registry key for all other Exchange Servers:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v15\ActiveMonitoring\SubjectsThis causes the error above in the Event Log or SCOM alerts. If this happens, the workaround is to simply delete the old server(s) from the registry key mentioned above on the remaining servers.
Microsoft says that this bug was previously closed as Won’t Fix but that they have re-opened it for re-triage.
