HTTP Error 503.0 - Server has been shutdown The service is unavailable. Most likely causes: An invalid identity in the application pool could cause this error. The application pool is no longer running because of configuration or reaching application failure limits. The concurrent application request limit was reached.

[smilingdassie]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

I am hosting an asp.net core website on IIS having following recommended steps
It starts up fine and displays a list of inventory in an html table (jquery datatables)
being pulled from SQL server database and using Entity Framework. All good
BUT if I then refresh the same page once or twice or click the button to fetch the data again
"Service unavailable. 503.0. Server was shut down"
I have produced all the logs and none of them give an error besides a request and 503 response.
If I test using the kestrel URL I cannot reproduce the bug - so I don't think it's a code error.
Any ideas? Am I configuring something wrong? Where to look for answers?
Website in question is : https://stokseek.colms.net/
Thanks for any help!

Expected Behavior

I should be able to refresh the page as often as I want to without the service being shut down
In Kestrel on the server it all works fine
In IIS it breaks after a couple of refreshes

Steps To Reproduce

No response

Exceptions (if any)

No exceptions besides
"The service is unavailable."
"HTTP Error 503.0 - Server has been shutdown
The service is unavailable.

Most likely causes:
An invalid identity in the application pool could cause this error.
The application pool is no longer running because of configuration or reaching application failure limits.
The concurrent application request limit was reached."

.NET Version

.NET CORE 6.0

Anything else?

https://stokseek.colms.net/

[adityamandaleeka]

Triage: That error message might have occurred for a number of reasons. Can you try the steps in https://docs.microsoft.com/en-us/aspnet/core/test/troubleshoot-azure-iis?view=aspnetcore-6.0#troubleshoot-on-iis to get more information?

[ghost]

Hi @smilingdassie. We have added the "Needs: Author Feedback" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

See our Issue Management Policies for more information.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

See our Issue Management Policies for more information.