My Blazor Server App Windows Authentication works when I open the page on the server. When page opened on another domain PC, credentials are not asked

Question

I have activated in the Project properties "Enable Windows Authentication" When I open my pages on a browser in the server (where my app is hosted) then credentials are asked, that means working fine. But when I open my pages on another PC in the same intr.net domain, no login Window appears. The pages are opened directly. What is missing in my project settings? My app is hosted in IIS

web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<location path="." inheritInChildApplications="false">
<system.webServer>
  <handlers>
    <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
  </handlers>
  <aspNetCore processPath="dotnet" arguments=".\WebApplication7.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="inprocess" />
</system.webServer>
</location>