How do i publish a Blazor ASP.NET App in IIS?

Question

i have build a Blazor-Server-App (ASP.NET Core hosted) and published it from Visual Studio to a local folder. It worked fine.

Now i want to publish it on my windows server. It successfully runs some ASP.NET web APIs, so basically its working. It has an own domain.

What i did now is copying the local folder to the server and opening IIS Manager. I added a website and set the path to the folder.

But now, when i click on "Application Setting" i get an error regarding the web.config, see Screenshot.

I would appreciate any hints on why the web.config Visual Studio created does not work with my IIS.

Regards, Tim

Answer 1

to publish blazor app in iis first make sure you installed below iis feature:

• .NET Core hosting bundle
• ASP.NET Core Runtime

Download and Install the Runtime and Hosting bundle as per your version.

https://dotnet.microsoft.com/download/dotnet-core/3.1

after installing hosting bundles do not forget to restart the machine. if you installed a hosting bundle bore installing iis you need to repair it.

now Open blazor application in Visual Studio, right-click on a project from solution explorer and select “Publish..” option.

Click on Publish > Start > Folder > choose a folder path and click on the “Create Profile” button.

Click on the “Publish” button.

Now, Open IIS.

Right Click on “SItes” > “Add Website…”.

Set all details like “Site Name”, “Physical path”, “IP address” etc, and click on the “OK” button.

Done!, now right-click on Browse and you can see your hosted application inside the browser.