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We upgraded our Blazor server app to .Net 8 from .Net 6. by folowing the instructions. we changed the blazor.server.js to blazor.web.js. everything works good from visual studio IDE using IIS express. After the application is deployed to our test server, we get the error GET https://my domain.com/_framework/blazor.web.js net::ERR_ABORTED 404 (Not Found). I swtiched to see blazor.server.js works or not, I get a different error. I have installed the nuget package Microsoft.aspnetcore.component.web(8.0.1) and referenced to the project. Any help is appreciated.
A free and open-source web framework that enables developers to create web apps using C# and HTML, developed by Microsoft.
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Hi @Balu Raju , I had a test in my side with a blazor server app which is already converted to .net 8 blazor web app, and it worked well both in VS and IIS. Could you please help confirm if your app could work well when hosting it in IIS which is in your computer? I just to want to confirm if the issue was due to the app or the test server.
Answer accepted by question author
it was deployed in sub directory
See the docs for how to configure a Blazor application deployed to an IIS sub application. App base path
I think the issue is in app.razor code that I pasted in my previous reply. the line that causes the issue is <base href="/" /> In localhost the url is https://localhost:<port number/ whereas when I deployed. it was deployed in sub directory https://mysite.com/myDir so, when I changed in the App.Razor <base href="/myDir/" />. it worked. Prior to upgrade I used to have this <base href="~/" />, it seemed to work, but not anymore. I cannot hard code the sub directory in the app razor because production deployment could be any folder. Any suggestions?
Here is what I did, I created a brand new Blazor Web App with .Net 8 using the "Blazor Web App" template.
No changes were made. I took the application as it was created.
Worked well in IIS Express locally via VS IDE.
Published it and deployed on our Test IIS Server. I'm getting the same Resource not found on many things.
Here is my generated APP.razor code <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <base href="/" /> <link rel="stylesheet" href="bootstrap/bootstrap.min.css" /> <link rel="stylesheet" href="app.css" /> <link rel="stylesheet" href="TestBlazorWebApp.styles.css" /> <link rel="icon" type="image/png" href="favicon.png" /> <HeadOutlet @rendermode="InteractiveServer" /> </head> <body> <Routes @rendermode="InteractiveServer" /> <script src="_framework/blazor.web.js"></script> </body> </html>
A 404 simply means the file was not found. This could be an IIS configuration issue or maybe a deployment issue. Have you checked the server to verify the wwwroot exists and there are files within? Can you explain how you deployed the Blazor Application and how IIS is configured?
Hi, It works well in VS IDE, but when hosted on the server in IIS, it does not work as it could not find the resource blazor.web.js.