ASP.NET 5 IIS 500 error with EF7 application

Rays

I have an application hosted in IIS 8, developed in ASP.NET 5, MVC 6 and EF7. I've created an API for the app to be accessible via and http://localhost/apialso created some controllers to access the data.

When I access the API from Visual Studio everything works fine and I am able to retrieve the JSON data. However, when I host the application IIS 8 and the browser, I get localhost/api/controlleran 500error in the IIS log. I have also http platform handler 1.2installed on Windows Server 2012 R2 server. Actually, I am able to browse static pages and other links, for example localhost/home, but when I try to access the api controller I get a 500 error code.

Now when I self-host the app and browse it using web.cmdthe executable from the app localhost:5000/api/controller, I can retrieve the json data back from the json hosting site.

Since I don't know what the problem is, I enabled the feature Failed request tracing rulesand was able to capture the log for 500 errors. Below is the screenshot:

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Daniel Lesser

Can't get this message from the failed request log, but since you say it works outside of IIS, I might suggest the usual skeptics:

  1. Confirm that the application pool is set up to work with .NET 5.0 and not set to another CLR (like 2.0 or 4.0). ( Actually it does, because in this case non-API MVC controllers simply won't work... )

  2. If using NTLM security with SQL, verify that the application pool is running with an account with sufficient database permissions, as the execution context may be different when running IIS Express from Visual Studio vs. IIS.

I would also recommend checking the Windows error log, not just the request trace....

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