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"Could not connect to a directory server" error message when you click the “last page” button in the search results in Exchange Server 2007 OWA
Article ID: 2498924 - View products that this article applies to.
Consider the following scenario:
Could not connect to a directory server. If the problem continues, contact technical support for your organization.
This issue occurs because Exchange Server 2007 changes the query parameters between pages. Therefore, strict search hash checking fails on the Windows Server 2008 R2-based domain controller.
To resolve this issue, install the following update rollup:
(http://support.microsoft.com/kb/2509911/ )Description of Update Rollup 4 for Exchange Server 2007 Service Pack 3
To work around the issue, disable strict search hash checking on all Windows Server 2008 R2-based domain controllers in the Exchange Server 2007 environment. To do this, add the following registry subkey on all the Windows Server 2008 R2-based domain controllers:
Name: DSA Heuristics
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 2498924 - Last Review: August 10, 2011 - Revision: 2.0