IIS 7 & Community Server, Tag problem

The day, I upgraded the Community Server 2007 to 2008 in IIS7 (Windows Server 2008), and encountered one problem. The tag cloud links became ooo+xxx when the tag include space character. Of course, the link was broken.

The message from IIS as below

Most likely causes: The request contained a double escape sequence and request filtering is configured on the Web server to deny double escape sequences.

Things you can try:Verify the configuration/system.webServer/security/requestFiltering@allowDoubleEscaping setting in the applicationhost.config or web.confg file.

The discussion in the Telligent is as windows server 2008 - IIS7 - tags with space in name give 404.

The the clear steps as this KB.

 

1. Locate the following directory: %windir%\System32\inetsrv\config
2. Open the applicationHost.config file in a text editor such as Notepad.
3. In the applicationHost.config file, locate the following code:
   <section name="requestFiltering" overrideModeDefault="Deny" />
4. Replace the code that you found in step 3 with the following code:
   <section name="requestFiltering" overrideModeDefault="Allow"/>
5. Locate the following diretory:
   %windi%\System32\com
6. Double-click the directory of the SOAP-enabled server that you want to activate.
7. Open the web.config file in a text editor such as Notepad.
8. In the web.config file, locate the following code:
   </configuration>
9. Replace the code that you found in step 8 with the following code:
   <system.webServer>
<security>
<requestFiltering allowDoubleEscaping="True"/>
</security>
</system.webServer>
</configuration>