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Article ID: 248085 - Last Review: July 7, 2008 - Revision: 5.1
Error Message: HTTP 401.5 - Unauthorized: Authorization by ISAPI or CGI Application Failed
This article was previously published under Q248085
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
For more information about IIS 7.0, visit the following Microsoft Web site:
When you attempt to access an IIS Web site, the following
error message may occur:
HTTP 401.5 - Unauthorized:
Authorization by ISAPI or CGI application failed
The Web address has an ISAPI (Internet Server Application
Programming Interface) or CGI (Common Gateway Interface) program that verifies
user credentials. The authentication credentials used to connect to the server
were denied access by this program.
To resolve this issue, attempt to access the server again
using the appropriate credentials. Contact the system administrator to obtain
the correct logon information.
APPLIES TO
- Microsoft Internet Information Server 4.0
- Microsoft Internet Information Services 5.0
- Microsoft Internet Information Services 6.0
| kbpending kbprb kbprod2web KB248085 |
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