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C070301 - HTTP Error 401.3 Using Windows Server 2003 with IIS

Products:

Express Server 5.3 and 6

Summary:

You receive an HTTP 401.3 error when trying to access Express Server on Windows Server 2003 with IIS.

Cause:

Note that when executing Web page scripts, IIS may be using the “IWAM_computername” account instead of the “IUSR_computername” account. If so, there may be a problem with insufficient permissions or an incorrect password on the IWAM account, especially if you assigned permissions to the IUSR account instead of the IWAM account.

Note that when executing Web page scripts, IIS may be using the “IWAM_computername” account instead of the “IUSR_computername” account. If so, there may be a problem with insufficient permissions or an incorrect password on the IWAM account, especially if you assigned permissions to the IUSR account instead of the IWAM account.

Solution:

Depending on which Windows operating system and web server Express Server is running on, it must run as one of the processes and users described below.

Windows 2003 with IIS 

  • Express Server runs as: w3wp.exe
  • User running the process is: iusr_machineName

IIS 6 running IIS 5 compatibility mode 

  • Express Server runs as: dllhost.exe
  • User running the process is: iwam_machineName

Windows 2000

  • Express Server runs as: dllhost.ex
  • User running the process is: iusr_machineName

Apache

  • Express Server runs as: apache.exe
  • User running the process must is: LocalSystem

The user must have:

  • read permissions to all Express Server folders and subdirectories and all catalogs
  • write permissions to ImageServer/var and its subfolders

This article was last updated or verified on 4 August 2012.