[Question] The cause of Event ID 5011

Question

We found warning status of WAS (Event viewer) every hour after 8 February 2023 9:00 AM onwards.

and event message is "A process serving application pool '.......' suffered a fatal communication error with Windows Process Activation Server.

The process id was '9084'. The data field contains the error number.

We understand this process ID is Event ID 5011 so we would like to know why It occur and how to fix it?

https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc735271(v=ws.10)?redirectedfrom=MSDN

Answer 1

Hello there,

This event is logged when a process serving application pool suffered a fatal communication error with the Windows Process Activation Service.

This issue may be caused by some services not started.

You could take below methods to resolve this issue:

Method A)

Recycle the application pool "MSExchangeMapiFrontEndAppPool" from IIS Manager.

IIS Manager > Application Pools > MSExchangeMapiFrontEndAppPool > Recycle

Hope this resolves your Query !!

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