process serving application pool suffered a fatal communication error 5011

asp.net iis iis-7 iis-7.5 w3wp.exe
Ali Eshghi picture Ali Eshghi · Jun 10, 2018 · Viewed 11.4k times · Source

Recently I encounter an issue which is related to http error 503 , service is unavailable. when I opened IIS I got that my application pool has stopped then I see windows logs and I see this message:

a process serving application pool suffered a fatal communication error 5011.

The .NET Framework version being used is v4.0. My site was worked correctly until yesterday but I don't know how fix this issue, thanks if anyone can help me.

Answer

Parvez Mulla picture Parvez Mulla · Jun 22, 2018

You are running into a classic application pool crash issue.

Please follow my MSDN blog here to identify the culprit. Let me know if you need any help with this.

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