IIS 7.0 does not return the directory list if you enter an FTP LIST command together with a file mask argument

• If you enter an FTP LIST command, IIS 7.0 returns the directory list to the FTP client application as expected.
• If you enter an FTP LIST command together with a file mask argument, IIS 7.0 does not return the directory list to the FTP client application.
  
  Note The following command is an example of an FTP LIST command together with a file mask argument:
  dir *.xml

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Steps to reproduce the problem

1. Install and then configure an IIS 7.0 FTP site on a Windows Vista-based computer.
2. In the home folder of the FTP site, create two files, and then name the files the File.txt file and the File.xml file.
3. On a remote computer, start a command prompt.
4. Type ftp, and then press ENTER.
5. Type open servername, and then press ENTER.
   
   Note In this command, replace servername with the name or with the IP address of the Windows Vista-based FTP server.
6. Enter a user name and a password if you are prompted to do this.
7. Enter an FTP LIST command. To do this, type dir, and then press ENTER.
   
   Notice that both files appear in the directory list. For example, results that resemble the following appear:

   200 PORT command successful.
   150 Opening ASCII mode data connection for /bin/ls.
   <date>   <time>                        4 file.txt
   <date>   <time>                        4 file.xml
   226 Transfer complete.

8. Enter an FTP LIST command together with a file mask argument. To do this, type dir *.xml, and then press ENTER.
   
   Notice that the File.xml file does not appear in the directory list. For example, results that resemble the following appear:

   200 PORT command successful.
   150 Opening ASCII mode data connection for /bin/ls.
   226 Transfer complete.

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