Detailed Error messages on Azure

To enable detailed errors, you can use the ASPNETCORE_DETAILEDERRORS environment variable or configure the application to always show detailed error pages.

Example: Using ASPNETCORE_DETAILEDERRORS

Add the following configuration to your web.config file when hosting on IIS:

<configuration>
 <system.webServer>
   <aspNetCore processPath="dotnet" arguments=".\YourApp.dll">
     <environmentVariables>
       <environmentVariable name="ASPNETCORE_DETAILEDERRORS" value="true" />
     </environmentVariables>
   </aspNetCore>
 </system.webServer>
</configuration>

Example: Developer Exception Page in Code

In your Startup.cs or Program.cs, enable the Developer Exception Page for the Development environment:

var app = builder.Build();
if (app.Environment.IsDevelopment())
{
   app.UseDeveloperExceptionPage();
}
else
{
   app.UseExceptionHandler("/Error");
   app.UseHsts();
}
app.Run();

This ensures that detailed error pages are shown only during development.

Important Considerations

1. Environment-Specific Configuration: Always restrict detailed error messages to the Development environment. Exposing them in Production can lead to security risks.

2. Custom Error Pages: For Production, use UseExceptionHandler to redirect users to a custom error page.

3. Testing: Test your error-handling setup thoroughly to ensure no sensitive information is leaked.

By following these practices, you can debug effectively during development while maintaining security in production.