Using Windows Integrated Authentication with IIS-hosted Dynamics AX Services

  • Version: Dynamics AX 4, Dynamics AX 2009.


  • Problem

  • When you host Dynamics AX web services on Microsoft Internet Information Services (IIS) v6 you might see an error message similar to the one shown in Figure 1 at runtime.


  • Possible Cause

  • This may happen when IIS is configured to use Integrated Windows authentication to authenticate client requests and thus needs to exchange Negotiate security headers with the client.


  • Resolution

  • IIS needs to be configured to support both the Kerberos protocol and the NTLM protocol for network authentication; see for details.

Figure 1 - Error Message.png