Multi Site generating 4014 error

Hello,
I installed a new version of WordPress on a new Server. Now, I set pretty permalinks and than activated Multi Site. Everything working great so far. When I’m trying to access one of those newly created site I get this error:

“
404 – File or directory not found.
The resource you are looking for might have been removed, had its name changed, or is temporarily unavailable.
“

here are the contents of the web.config file (code given to me from the tool menu of wordpress:
“
<?xml version=”1.0″ encoding=”UTF-8″?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name=”WordPress Rule 1″ stopProcessing=”true”>
<match url=”^index\.php$” ignoreCase=”false” />
<action type=”None” />
</rule>
<rule name=”WordPress Rule 2″ stopProcessing=”true”>
<match url=”^([_0-9a-zA-Z-]+/)?wp-admin$” ignoreCase=”false” />
<action type=”Redirect” url=”{R:1}wp-admin/” redirectType=”Permanent” />
</rule>
<rule name=”WordPress Rule 3″ stopProcessing=”true”>
<match url=”^” ignoreCase=”false” />
<conditions logicalGrouping=”MatchAny”>
<add input=”{REQUEST_FILENAME}” matchType=”IsFile” ignoreCase=”false” />
<add input=”{REQUEST_FILENAME}” matchType=”IsDirectory” ignoreCase=”false” />
</conditions>
<action type=”None” />
</rule>
<rule name=”WordPress Rule 4″ stopProcessing=”true”>
<match url=”^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*)” ignoreCase=”false” />
<action type=”Rewrite” url=”{R:1}” />
</rule>
<rule name=”WordPress Rule 5″ stopProcessing=”true”>
<match url=”^([_0-9a-zA-Z-]+/)?([_0-9a-zA-Z-]+/)?(.*\.php)$” ignoreCase=”false” />
<action type=”Rewrite” url=”{R:2}” />
</rule>
<rule name=”WordPress Rule 6″ stopProcessing=”true”>
<match url=”.” ignoreCase=”false” />
<action type=”Rewrite” url=”index.php” />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
“

Any idea on how to solve this?

thanks