Script Download: FixIssuesDescribedinKB982021(PowerShell).zip
http://gallery.technet.microsoft.com/scriptcenter/Script-to-fix-the-issue-fc542261

This sample can help you to check and change the NTLM setting in Windows Server. It shows how to get the NTLM setting in Windows Server and fix the issue described in KB 982021 by using PowerShell.

You have Microsoft Lync Server 2010 Front-End Server or Microsoft Lync Server 2010 Edge Server installed on Windows Server 2008 R2 with NTLM SSP set to 'Require 128-bit encryption'. This will prevent pre-Windows 7 clients from joining online meetings. You can run this script to check and change the NTLM setting to fix this issue.

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You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery