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Patch Management / Patch Tuesday / Windows / Windows Server

August Rollup Windows 8.1 and Windows Server 2012 R2 May Break NPS Authentication

If you glance at an update information page, you might miss something important.

In the known issues section of the Windows 8.1 and Windows Server 2012 R2 rollup for August 2017, you may have missed the following…

NPS authentication may break, and wireless clients may fail to connect.

Microsoft has provided the following workaround…

On the server, set the following DWORD registry key’s value to = 0: SYSTEM\CurrentControlSet\Services\RasMan\PPP\EAP\13\DisableEndEntityClientCertCheck


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