FIX: Soft lockout does not apply if Outlook Anywhere uses KCD for SSO to Exchange Server

Applies to: Forefront Unified Access Gateway 2010


You configure Microsoft Forefront Unified Access Gateway (UAG) 2010 to perform a soft lockout on a user after several failed authentication tries. If you also configure Microsoft Outlook Anywhere to use Kerberos Constrained Delegation (KCD) for Single Sign-On (SSO) access to Microsoft Exchange Server, you find that the soft lockout process does not apply.

In this configuration, Outlook authenticates to UAG by using NTLM authentication.


This problem occurs because the "Integrated Windows Authentication" handler in UAG does not check the account lockout status correctly.


This problem is fixed in Rollup 1 for Microsoft Forefront Unified Access Gateway 2010 Service Pack 4 (SP4).


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


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