Why do I get "HTTP error 401.3: Unauthorized due to ACL on resource"?
Cause:
This problem occurs when permissions for the file that the user is trying to access are denied to that user. This error message differs from a standard 401 error message, in that, the user has been logged on to the server, but the resource that the user is trying to access is restricted. For example, if only Administrators and LocalSystem have access to a file on the server and a user, who is a member of the Users group, tries to access it, the user receives a 401.3 (provided they can log on to the server).
Solution:
Check the NTFS permissions on the file in question. Make sure the users or groups that need access to the file are listed in the file permissions.
Published, May 3rd 2009, 15:42