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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(153.6, 26%, 24%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESG%3C/text%3E%3C/svg%3E)
HTTP Error 500.30 - ANCM In-Process Start Failure - The Project is Asp.net core 3.1
• Category: Microsoft.AspNetCore.Server.IIS.Core.IISHttpServer
• EventId: 2
• RequestId: 80003143-0000-e600-b63f-84710c7967bb
• RequestPath: /
• SpanId: 0adfa77900585d42
• TraceId: 1e2f3d6255feef40b0d3d3dce5982f55
• ParentId: 0000000000000000
•
• Connection ID "16573246630334050626", Request ID "80003143-0000-e600-b63f-84710c7967bb": An unhandled exception was thrown by the application.
•
• Exception:
• System.NullReferenceException: Object reference not set to an instance of an object.
• at ......Infrastructure.SmartSearchIndexRebuildMiddleware.InvokeAsync(HttpContext context) in .../SmartSearchIndexRebuildMiddleware.cs:line 79
• at Microsoft.AspNetCore.Server.IIS.Core.IISHttpContextOfT`1.ProcessRequestAsync()
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.NET: Microsoft Technologies based on the .NET software framework. Runtime: An environment required to run apps that aren't compiled to machine language.
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 9%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ECD%3C/text%3E%3C/svg%3E)
Hi @Sajith Gopalakrishnan Hema ,
According to the prompt:
500.30 In-Process Startup Failure
Common failure conditions:
1.The app is misconfigured due to targeting a version of the ASP.NET Core shared framework that isn't present. Check which versions of the ASP.NET Core shared framework are installed on the target machine.
2.Using Azure Key Vault, lack of permissions to the Key Vault. Check the access policies in the targeted Key Vault to ensure that the correct permissions are granted.
If it doesn't work, you can give us the relevant code according to your error message
Answer accepted by question author
The error is saying that on line 79 of your class SmartSearchIndexRebuildMiddleware you are getting an object refence error. Basically you are trying to use something that is null