ASP.NET Core Web API Deployment problem to IIS

Question

ASP.NET Core Web API Deployment problem to IIS

Cenk 1,036

Hi there,

I am trying to publish my asp.net core 7 web API to a windows server IIS. I installed the core 7 windows hosting bundle but got an internal server error when I try to display it on the browser. What could be the problem? How can I solve this?

Here is the event log error message;

IIS APPPOOL\OyunPalas

Fatal alert generated and sent to remote endpoint. This may cause the connection to be terminated. TLS protocol defined fatal error code: 48. Windows SChannel error status: 552.

Here is my publish profile settings;

Ekran görüntüsü 2023-02-14 171149

2 answers

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Answer 1

Bruce (SqlWork.com) 77,686 Volunteer Moderator

You question is not clear. You state your app is net 6, but you publish is net 7.

internal server error is typically startup. Check the event log for the error message,

Cenk 1,036 Reputation points

2023-02-14T16:51:48.5566667+00:00

Sorry for the typo, it is .net core 7. I will check the event log.
Chen Li - MSFT 1,231 Reputation points

2023-02-15T01:28:04.61+00:00

Hi @Cenk,

If there is an error code or status code in your error message, you can refer to the Status/Error Codes section in this document to find the corresponding solution: Internet Information Services troubleshooting.
Cenk 1,036 Reputation points

2023-02-15T05:10:12.6233333+00:00

Getting this error in the event log;

IIS APPPOOL\OyunPalas

Fatal alert generated and sent to remote endpoint. This may cause the connection to be terminated. TLS protocol defined fatal error code: 48. Windows SChannel error status: 552.
Chen Li - MSFT 1,231 Reputation points

2023-02-15T09:18:31.28+00:00

Hi @Cenk,

Code 48 means unknown_ca:
Received a valid certificate chain or partial chain, but the certificate was not accepted because the CA certificate could not be located or could not be matched with a known, trusted CA. This message is always fatal.

Try to enable to Schannel event logging in IIS, more detail event may be helpful to narrow down this problem. Details steps about how to enable the event logging, please reference below link:

Enable Schannel event logging in Windows and Windows Server.

Answer 2

Cenk 1,036

Adding this to the connection string solved my issue;

TrustServerCertificate=Yes

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ASP.NET Core Web API Deployment problem to IIS

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