tethys/public/web.config

<configuration>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="Imported Rule 1" stopProcessing="true">
          <match url="^(.*)/$" ignoreCase="false" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
          </conditions>
          <action type="Redirect" redirectType="Permanent" url="/{R:1}" />
        </rule>
         <!--# Rewrite rule for the delivery of static resources-->
        <rule name="Imported Rule 2" stopProcessing="true">
          <match url="^" ignoreCase="false" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
          </conditions>
          <action type="Rewrite" url="index.php" />
        </rule>
        <rule name="Rule 3" stopProcessing="true">
          <match url="^(CHANGELOG\.md|composer\.(json|lock))" ignoreCase="false" />
          <action type="Rewrite" url="index.php?404" appendQueryString="false" />
        </rule>
      </rules>      
    </rewrite>
    <defaultDocument> 
      <files> 
        <clear />
                <add value="index.php" />
                <add value="Default.htm" />
                <add value="Default.asp" />
                <add value="index.htm" />
                <add value="index.html" />
                <add value="iisstart.htm" />
      </files> 
    </defaultDocument> 
  </system.webServer>
</configuration>