The idea of the post is issue that we faced recently. Sometimes Outlook freezed for a while with warning message.
At the same time SCOM started to warn about issues with Application Pool of one Exchange server. This issues should be linked, but how?
Exchange server registered warnings 5011 in System Event Log:
The core of the issue was found by my colleague - several HealthMailboxes* was disabled. After enabling everything became good: no warnings and freezes.
The experiment
I decide to check what happens if disable all health mailboxes. Let's do it.
What happens?
- All services are rinning.
- "Microsoft Exchange Health Manager" does not create new HealthMailboxes after restart.
- In the System event log periodically appear warnings 5011 with the follofing descriptions:
| A process serving application pool 'MSExchangeServicesAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '13820'. The data field contains the error number. |
| A process serving application pool 'MSExchangeSyncAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '1792'. The data field contains the error number. |
| A process serving application pool 'MSExchangeMapiFrontEndAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '9484'. The data field contains the error number. |
| A process serving application pool 'MSExchangeOWAAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '9012'. The data field contains the error number. |
| A process serving application pool 'MSExchangeECPAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '6536'. The data field contains the error number. |
| A process serving application pool 'MSExchangeAutodiscoverAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '11784'. The data field contains the error number. |
| A process serving application pool 'MSExchangeOABAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '4824'. The data field contains the error number. |
| A process serving application pool 'MSExchangeRpcProxyFrontEndAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '4856'. The data field contains the error number. |
- Get-HealthReport shows more than usual Unhealthy states.
- All healthcheck probes are healthy.
- Outlook, OWA, ECP and other services are working properly.
Conclusion
If you are faced with 5011 warning check state of HealthMailboxes.
And in general follow the best practices regarding managing accounts of HealthMailboxes on the article "Exchange 2013/2016 Monitoring Mailboxes".
No comments:
Post a Comment