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Khaliq ur Rehman

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MSExchangePowerShellAppPool suffered fatal error warning in event viewer

I am getting the below warning on all my Mailbox servers in Exchange 2013.

the Environment is:
OS: Server 2012R2
Exchange 2013 CU13
DAG with 3 Nodes cluster.

Event ID:      5011
Task Category: None
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      ###########
A process serving application pool 'MSExchangePowerShellAppPool' suffered a fatal communication error with the Windows Process Activation Service. The process id was '41228'. The data field contains the error number.
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Is this warning causing any issue.  Do you see any error after this warning.
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Khaliq ur Rehman


No there is no error after this warning however as it is appearing daily in Morning, it becomes concern. I am not able to explain, WHY this event is occurring daily morning and on all mailbox servers.
How is CPU and Memory usage in the morning. Do you see any service crash error in system logs. Just check System logs also, when you see this warning. That might help  you to find, what is going on.
Memory use is high on 1 server but wondering that it is coming on all 3 Mailbox servers and on the same time.
Any idea will be welcome for specific issue.
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Khaliq ur Rehman

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