PRB: Request.ServerVariables("LOGON_USER") Returns Empty String

ID: Q188717

The information in this article applies to:

Active Server Pages

SYMPTOMS

Accessing the Request.ServerVariables("LOGON_USER") variable from Active Server Pages (ASP) returns an empty string.

CAUSE

The LOGON_USER variable is not populated if the ASP page is accessed using Allow Anonymous security.

In order for the LOGON_USER variable to be populated, the user must be authenticated using either Basic or NT Challenge/Response security.

STATUS

This behavior is by design.

REFERENCES

For additional information, please see the following article in the Microsoft Knowledge Base:

Q142868 IIS: Authentication & Security Features

Additional query words: allow anonymous LOGON_USER ASP ServerVariables Request kbASP


Keywords          : kbASP kbASPObj kbScript kbSecurity kbVisID kbGrpASP 
Version           : winnt:
Platform          : winnt 
Issue type        : kbprb

Last Reviewed: May 27, 1999