Angular application working with IE11 locally but not when hosted on IIS

Question

I have made my angular application (using .NET Core 3.1) compatible with IE11 based on the steps described in this tutorial: https://dev.to/coly010/angular-how-to-support-ie11-4924

It runs just fine in IE11 when running it locally (Debug or Release mode both work) but after publishing and hosting it on an IIS webserver, it shows a blank page when opening it in IE11. When inspecting the IE11 console, the following errors are displayed ("Bezeichner erwartet" means "identifier expected"):

How can I figure out what is wrong here so that I can get the application working in IE11 both locally and when hosted on IIS?

Answer 1

I find a thread with the same issue as yours, you can refer to it.

I think your issue might also be not installing .Net Core runtime or Hosting bundle before hosting the site on IIS. As you are using .NET Core 3.1, I suggest that you can download them from this link and install them. After installing, please try to host your site on IIS again to see if it can work well.