# Aurelia/.NetCore 404 error on app.bundle.js

**URL:** <https://discourse.aurelia.io/t/aurelia-netcore-404-error-on-app-bundle-js/2397>\
**Category:** Help Requests\
**Created:** [March 21, 2019, 1:10pm UTC](https://discourse.aurelia.io/t/aurelia-netcore-404-error-on-app-bundle-js/2397 "2019-03-21T13:10:19Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![constructor](https://yyz1.discourse-cdn.com/flex027/user_avatar/discourse.aurelia.io/constructor/32/710_2.png) [@constructor](https://discourse.aurelia.io/u/constructor)\
**Post date:** [March 21, 2019, 2:14pm UTC](https://discourse.aurelia.io/t/aurelia-netcore-404-error-on-app-bundle-js/2397/9 "2019-03-21T14:14:04Z")

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> [@roddharris](#):
>
> However, the changes are definitely not being “re-built” because even if I open a different browser or a Private window, I’m getting the old code until I restart the app.

If you open your `\wwwroot\dist` folder and make a change to a file and save, you should see (I do) the newly generated `vendor~{hash}.chunk.js` files appear.

Also you could use BrowserLink:

> [@Aurelia CLI - Visual Studio 2017/2019 Tools](https://discourse.aurelia.io/t/aurelia-cli-visual-studio-2017-tools/2274/6):
>
> Here is a way to get auto-refresh of all changes (including .html, .css and Aurelia) in Visual Studio 2017 using the inbuilt [BrowserLink](https://www.nuget.org/packages/Microsoft.VisualStudio.Web.BrowserLink/) and [MadsKristensen’s ‘BrowserReloadonSave’](https://marketplace.visualstudio.com/items?itemName=MadsKristensen.BrowserReloadonSave). The only change you need to make is to add the following to the Startup.cs : if (env.IsDevelopment()) { ... app.UseBrowserLink(); } I have just tested it and it seems to work perfectly so far. With this in mind, I do no think it requires anything in the templates, …

> [@roddharris](#):
>
> Any idea when that VS template will be production ready?

I am working on it when I get the time. I update every few days. There is still quite a lot to do and can not say when it could be called production ready. I use it along side the CLI now, but that is just me.

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