404 not found js css assets with ASP.NET Core MVC, vite/vue web app

Question

I'm having trouble with an ASP.NET Core 8 MVC app with vite vue. My app runs locally in which I mound in a cshtml div id= app all the vue components.

Locally the vite server runs and everything is fine. I also use vite.aspnetcore nuget package.

However when I publish my app to IIS, I get so many missed 404 js and css files (I can only see the main.js) but they do exist in my wwwroot folder.

The vite build is configured to build all the assets in wwwroot with a manifest.json which it does but again 404 in published web app.

What to do here, please?

marc_s · Accepted Answer · 2025-08-28 06:10:27Z

0

In your case the issue isn't that the files don't exist.. it's that IIS Core isn't resolving them correctly after publish.

It's that Locally the Vite dev server handles it, but on IIS you need to be explicit sometimes... when these type of issue arise.

In my opinion, you should check the core file of your project (like program.cs). It should include app.UseStaticFiles() and sometimes IIS blocks .js, .css, .map, so you have to add proper MIME types in IIS if needed.

Check your vite.config.js file; verify the base: config of app whether it is server from the root domain or hosted under a virtual directory.

These are the possible solutions. If you explain your properly with some code snippets, I would update my answer accordingly.

edited Aug 28 at 6:10

marc_s

760k186 gold badges1.4k silver badges1.5k bronze badges

answered Aug 26 at 19:07

Karan Sharma

112 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

404 not found js css assets with ASP.NET Core MVC, vite/vue web app

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related