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This fixed the issue for us. &nbsp;Thank you for the quick response.
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This fixed the issue for us.  Thank you for the quick response.

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Out of interest, which particular step solved it? (and why would this be needed, updates don't modify firewall rules?)
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Out of interest, which particular step solved it? (and why would this be needed, updates don't modify firewall rules?)

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Mcknife, &nbsp;we opened up UDP/TCP 464 on our firewall.
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Mcknife,  we opened up UDP/TCP 464 on our firewall.

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After installing August and September security patched the end users receive an error can not contact domain controller when users are attempting to change their password.<br />
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Domain controllers are running Windows Server 2008 R2 SP1, &nbsp; clients are Windows 7, Windows 8. &nbsp; <br />
<br />
Is there a security patch needed on the domain controller to fix this issue? &nbsp; Does anyone know steps to fix without uninstalling the security updates?
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After installing August and September security patched the end users receive an error can not contact domain controller when users are attempting to change their password.

Domain controllers are running Windows Server 2008 R2 SP1,   clients are Windows 7, Windows 8.   

Is there a security patch needed on the domain controller to fix this issue?   Does anyone know steps to fix without uninstalling the security updates?

Microsoft Security Update Issue

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.