Additional Resources for Troubleshooting Kerberos

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

For additional information about troubleshooting Kerberos problems, see the following resources:

General resources

Kerberos Authentication and Ticket Sizing Issues

Web applications and services, such as Internet Explorer, Internet Information Server, and Outlook Web Access may require additional Kerberos maximum settings adjusted, which are discussed in the following articles:

  • MaxBufferedSendBytes – Used to resolve slow performance when Internet Server Application Programming Interface (ISAPI) applications or Common Gateway Interface (CGI) applications are hosted on Microsoft Internet Information Services (IIS) 6.0, as described in Microsoft Knowledge Base article 906977 (

  • MaxClientRequestBuffer, MaxFieldLength, and MaxRequestBytes – Used to resolve HTTP 400 Bad Request (Request Header Too Long) errors, as described in Microsoft Knowledge Base article 920862 (

  • MaxPacketSize – Used to resolve Kerberos failures that results in “There are currently no logon servers available to service the logon request” error messages, as described in Microsoft Knowledge Base article (