Using app.MapStaticAssets() middleware doesn't loads the static files on linux virtual machine

Question

Recently, ASP.NET Core 9 released a new middleware, app.MapStaticAssets();, to enhance the delivery of static resources.

I’ve been deploying an ASP.NET Core MVC project on a Linux virtual machine, and everything works as expected, except for the static files (CSS, JS, images, etc.). However, using app.UseStaticFiles(); works perfectly.

Can anyone help me identify what I might be missing or misconfigured?

For your reference, here’s a snippet from my Nginx config file for serving static files:

    # MIME type handling for static files
      location ~* ^.+\.(css|js|jpg|jpeg|gif|png|ico|gz|svg|svgz|ttf|otf|woff|woff2|eot|mp4|ogg|ogv|webm|webp|zip|swf|map)$ {
        root /path/to/my/app/wwwroot;
        add_header Access-Control-Allow-Origin "*";
        expires max;
        access_log off;
      }```

Can you access the static files directly? Also try clearing the browser cache as this sometimes causes issues. — FSO931s
– FSO931s, Commented Jan 25 at 17:06
I do not think it is about static files. I think it is about binary files. What is the content type you are specifying in the MIME header? — jdweng
– jdweng, Commented Jan 25 at 20:33
text/html. I am trying to deploy a default MVC application. So everything is kept as default — a_n_rajin
– a_n_rajin, Commented Jan 26 at 6:52
Hi @a_n_rajin, I have test it in my ubuntu server, it works well. Could you find the wwwroot folder inside publish files? And I recommend you can enable asp.net core logging to check what happened. — buymeacoffee
– buymeacoffee, Commented Jan 27 at 12:59

Luis Mitrica · Accepted Answer · 2025-04-18 09:06:15Z

0

For some reason, if you disable hot reload in the launchSettings.json, it works:

"https": {
  "commandName": "Project",
  "dotnetRunMessages": true,
  "launchBrowser": true,
  "applicationUrl": "https://localhost:5131;http://localhost:5130",
  "hotReloadEnabled": false,
  "environmentVariables": {
    "ASPNETCORE_ENVIRONMENT": "Development"
  }

answered Apr 18 at 9:06

Luis Mitrica

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