blazor server app 404 on publish at / on IIS

Hi! Yesterday everything was fine. Today, every new/fresh project created with Visual Studio 2019 Preview is broken and it's showing only Loading... in browser. Error in Google Chrome ver. 72.0.3626.109

Failed to load resource: the server responded with a status of 404 (Not Found)
components.webassembly.js:1 Uncaught (in promise) SyntaxError: Unexpected end of JSON input
    at Object.<anonymous> (components.webassembly.js:1)
    at components.webassembly.js:1
    at Object.next (components.webassembly.js:1)
    at i (components.webassembly.js:1)

It doesn't matter if project is clear Blazor or Blazor (ASP.NET Core hosted). I didn't change anything. I just create a project and hit run on IIS Express button on top of VS.

dotnet --version
3.0.100-preview-010184

I did some kind of research what the problem could be and:

Object.defineProperty(t, '__esModule', { value: !0 }),
      (t.fetchBootConfigAsync = function() {
        return r(this, void 0, void 0, function() {
          return o(this, function(e) {
            switch (e.label) {
              case 0:
                return [
                  4,
                  fetch('dist/_framework/blazor.boot.json', { // <= (Not Found) error. Here, I had to add 'dist'
                    method: 'Get',
                    credentials: 'include'
                  })
                ];
              case 1:
              return [2, e.sent().json()]; // <= Here is the second error.
            }
          });
        });
      }),

Yes, Visual Studio 2019 Preview 3 and ASP.NET Core 3 preview 2 There is no global.json and same behavior if the project is created in different location, even on another partition dotnet --list-sdks

2.1.402 [C:\Program Files\dotnet\sdk]
2.1.403 [C:\Program Files\dotnet\sdk]
2.1.500 [C:\Program Files\dotnet\sdk]
2.1.502 [C:\Program Files\dotnet\sdk]
2.1.503 [C:\Program Files\dotnet\sdk]
2.1.504 [C:\Program Files\dotnet\sdk]
2.1.600-preview-009426 [C:\Program Files\dotnet\sdk]
2.1.600-preview-009472 [C:\Program Files\dotnet\sdk]
2.1.600-preview-009497 [C:\Program Files\dotnet\sdk]
2.2.100-preview3-009430 [C:\Program Files\dotnet\sdk]
2.2.101 [C:\Program Files\dotnet\sdk]
2.2.102 [C:\Program Files\dotnet\sdk]
3.0.100-preview-010184 [C:\Program Files\dotnet\sdk]

dotnet --list-runtimes

Microsoft.AspNetCore.All 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.0-preview3-35497 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.0-preview3-35497 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.0-preview-19075-0444 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.0-preview3-27014-02 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.0 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.0-preview-27324-5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.0.0-preview-27325-3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

I am still hoping there will be a better option that does this automatically, but depending how I setup my pages, I could probably also use wildcards to reduce need to update all the time.

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <staticContent>
            <mimeMap fileExtension=".wasm" mimeType="application/wasm" />
        </staticContent>
        <rewrite>
            <rules>
                <rule name="pageroute-counter" patternSyntax="Wildcard">
                    <match url="counter" />
                    <action type="Rewrite" url="/" />
                </rule>
                <rule name="pageroute-fetchdata">
                    <match url="fetchdata" />
                    <action type="Rewrite" url="/" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
</configuration>