Microsoft KB Archive/254613

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Knowledge Base

Error Message: HTTP/1.0 Invalid Application Name

Article ID: 254613

Article Last Modified on 11/21/2006


  • Microsoft Internet Information Services 5.0

This article was previously published under Q254613


When you connect to a Windows 2000 Server-based computer running Internet Information Services (IIS) 5.0, you may receive the following error message:

HTTP/1.0 Invalid Application Name


There are several causes for this kind of error message, which include the following:

  • Permission problems or conflicting permissions can cause this problem. Administrators sometimes forget to remove or streamline permissions at the NTFS level, which can cause the error message to occur. For additional information about setting permissions on NTFS drives, click the article number below to view the article in the Microsoft Knowledge Base:

    187506 List of NTFS Permissions Required for IIS Site to Work

    Also, the Anonymous user account can be replaced with specific users (local and global) and groups when tighter security is required. Essentially, the only accounts that need access to any Web site are Administrators (local group), System, and either IUSR or the specific groups and users you want to give access to. All other accounts should be removed from the list.
  • IUSR missing Read and Execute (RX) permissions on the Global.asa file can cause this error message. It is often incorrectly assumed that granting Read access to the Global.asa file allows malicious users the ability to read and manipulate that file. Actually, for sites that allow Anonymous access, this permission is required for the Global.asa file to initiate properly. If you are not using the Anonymous account, please see the Knowledge Base article referenced previously for information on setting correct permissions.
  • The FrontPage Server Extensions (FPSE) are not installed correctly. The FPSE set up the server for added functionality by using the FrontPage and Visual InterDev client tools. If they are incorrectly or incompletely installed, this error message can occur.
  • It is possible that pages are in a subfolder of the parent application root, and that folder has restricted permissions. For example, if the Default Web Site is set at C:\Inetpub\Wwwroot, and this is the Application root in Microsoft Transaction Server (MTS). The Wwwroot folder has given NTFS permissions to the Everyone group. However, under the Wwwroot folder, permissions have been set on a folder called test that restricts access to that folder. If you have set up a Web site so that folders at one level of the site have relatively open permissions, and sub-levels have restricted permissions, then you may encounter this problem. Please see the Knowledge Base article referenced previously to set consistent permissions for the entire application.

Additional query words: IIS 5

Keywords: kbnofix kbprb kbfaq KB254613