Seems yet another Microsoft security patch is causing issues this month. KB3179575 which was in the August Patch Tuesday deployment is to fix issues with the Windows 2012 (not R2) operating system.
Taken directly from the Microsoft site, this update includes quality improvements but no new operating system features are being introduced.
The key changes include:
At this stage it seems to be only affecting logons (authentication) to Windows 2012 Domain Controllers, again at this stage the only fix is to uninstall this update, or if you deployed this security update using Microsoft’s SCCM and SnaPatch, you can roll this update deployment back. There is no known fix at this stage.
You may also be interested in some other Microsoft patches KB3177725 & KB3176493 which are known to cause printing issues. These two security patches were also released this month as well as KB3176934 breaks Windows 10 Powershell.