When hosting a WordPress site under IIS you can run into some troubles when not getting things set-up exactly right. I thought I’d post up the configuration file I use for enabling this. The exact variables for your situation may var depending on the structure of your permalinks.
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<httpErrors errorMode="Detailed"/>
<rewrite>
<rules>
<rule name="Main Rule" stopProcessing="true">
<match url=".*"/>
<conditions logicalGrouping="MatchAll">
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
</conditions>
<action type="Rewrite" url="index.php/{R:0}"/></rule>
<rule name="wordpress" patternSyntax="Wildcard">
<match url="*"/>
<conditions>
<add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true"/>
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true"/>
</conditions>
<action type="Rewrite" url="index.php"/>
</rule>
</rules>
</rewrite>
<defaultDocument>
<files>
<clear/>
<add value="index.php"/>
</files>
</defaultDocument>
</system.webServer>
</configuration>
