IIS rewrite rule to point all request to root directory (or index.html) on IIS server.
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule enabled="true" name="rewrite to index" stopProcessing="true">
<match negate="true" url="^$"/>
<action type="Rewrite" url="/index.html"/>
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>