In IIS 7, 8, 8.5, 10 , you can add below code in the Option “URL Rewrite” when you click on the domain or in web.config file, as the .htaccess will not work as it works for Linux servers:

<?xml version="1.0" encoding="UTF-8"?>
<rule name="wordpress" stopProcessing="true">
<match url=".*" />
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
<action type="Rewrite" url="index.php" />