IDC Fails to Execute When Access to the Httpodbc.dll File Is Denied

ID: Q163698

The information in this article applies to:

SYMPTOMS

When you execute an Internet Database Connector (.idc) file, your browser may display the following error messages, depending on the authentication method used:

Allow Anonymous Authentication

Internet Explorer cannot open the Internet site
"http://www.yoursite.com/scripts/filename.idc?" The requested
header was not found.

Basic and Windows NT Challenge/Response Authentication

A dialog box will prompt you three times for your username and password; then you will get the following error message:
Error: Access is denied.


CAUSE

Access to the Httpodbc.dll file is required for the .idc file to execute. If permissions for the Httpodbc.dll file have been denied to the IUSR_Computername account for Allow Anonymous access or Microsoft Windows NT users authenticated with Basic or NT Challenge/Response authentication methods, the .idc file will fail to execute and generate the above error message.


WORKAROUND

Grant NTFS read/execute permissions to the Httpodbc.dll file for all users who need to execute .idc files. This includes, but is not limited to the IUSR_Computername account for Anonymous access and any Windows NT user accounts using Basic or Windows NT Challenge/Response authentication methods.

NOTE: By default, the Httpodbc.dll file is installed to the following location:

%SYSTEMROOT%\SYSTEM32\INETSRV\HTTPODBC.DLL 


Keywords          : 
Version           : WINNT: 2.0,3.0
Platform          : winnt 
Issue type        : kbprb

Last Reviewed: May 5, 1999