Second Wordpress installation on IIS server - wordpress

Question

I currently have a working wordpress installation in my server root, but now I'm adding another wordpress site to subfolder "new-site".
It's an IIS server, so the web.config file should have this in the root directory, according to wordpress:
<configuration>
<system.webServer>
<rewrite>
<rules>
<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>
</system.webServer>
</configuration>
The problem I'm facing now: How to modify the root's web.config file (below) so that the WP installation in /new-site works fine. (It's working fine on my localhost and I've changed the URLs in wp-options. The homepage on new-site looks fine but if you click on any link it'll be an error page of the root site.) Thanks!
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="4294967295" />
</requestFiltering>
</security>
<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" />
</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" />
<add value="index.html" />
<add value="Default.htm" />
<add value="Default.asp" />
<add value="index.htm" />
<add value="aboutus.html" />
</files>
</defaultDocument>
<handlers>
<remove name="PHP53_via_FastCGI" />
<remove name="AboMapperCustom-1045478" />
<add name="PHP53_via_FastCGI" path="*.php" verb="GET,HEAD,POST" modules="FastCgiModule" scriptProcessor="C:\Program Files (x86)\PHP\v5.3\php-cgi.exe" resourceType="Either" requireAccess="Script" />
</handlers>
</system.webServer>
</configuration>

Answer 1

Solved. In the web.config in the subfolder, add <clear /> so it won't be affected by the root's rule(s).
<configuration>
<system.webServer>
<rewrite>
<rules>
<clear />
<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>
</system.webServer>
</configuration>
Source: http://forums.iis.net/post/1883731.aspx