Microsoft KB Archive/145797

= No User Account Authentication Appears in Internet Explorer =

Article ID: 145797

Article Last Modified on 6/23/2005

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APPLIES TO


 * Microsoft Internet Information Server 1.0

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This article was previously published under Q145797



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx





SYMPTOMS
After you set up the Internet Information Server 1.0 FTP server and try to connect to the server using Internet Explorer, a Windows NT user account authentication dialog box does not appear. Instead, the following error message appears:

The attempt to load 'ftp:// ' failed.



CAUSE
This problem occurs if you clear the Allow Anonymous Connection check box for the FTP server in Internet Information Server and disable the Internet Guest account.



WORKAROUND
To work around this problem, enter the user account information in the following format:

ftp:// : @



STATUS
Microsoft has confirmed this to be a problem in Internet Information Server version 1.0 and Microsoft Internet Explorer versions 1.5 and 2.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.



MORE INFORMATION
Then the Allow Anonymous Connection check box is cleared, Windows NT passwords are sent to the server without encryption. Therefore, users are required to enter valid Windows NT user names and passwords to log onto the FTP service. This check box is checked by default for security reasons.

Additional query words: prodiis

Keywords: kbnetwork KB145797

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