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Senad Meškin
Senad Meškin

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ASP.NET Core - IIS Set environment in web.config

#csharp #programming #iis #coding

In order to set a Environment variable for the IIS hosted app via web.config we need to add <EnvironmentVariables> element inside the <aspNetCore> element.

<environmentVariables>
    <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
</environmentVariables>
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Example of your config should look like this:

 <aspNetCore processPath="dotnet" arguments=".\YourApp.dll" 
                        stdoutLogEnabled="false" 
                        stdoutLogFile=".\logs\stdout" 
                        hostingModel="inprocess">
    <environmentVariables>
        <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
    </environmentVariables>

</aspNetCore>
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SUNSHINE222025 •

​Great article on setting the ASPNETCORE_ENVIRONMENT variable in web.config for IIS-hosted ASP.NET Core applications! For developers working on macOS who need to run .NET Framework 4 applications without setting up a virtual machine, ServBay offers a seamless solution. It's been a game-changer for my development workflow.​